provide a default implementation for SerialBase destructor
provide a default implementation for SerialBase destructor

arostm/mbed-os,mmorenobarm/mbed-os,EmuxEvans/mbed,pbrook/mbed,fahhem/mbed-os,dbestm/mbed,bikeNomad/mbed,maximmbed/mbed,mmorenobarm/mbed-os,c1728p9/mbed-os,screamerbg/mbed,radhika-raghavendran/mbed-os5.1-onsemi,dbestm/mbed,jeremybrodt/mbed,bremoran/mbed-drivers,c1728p9/mbed-os,struempelix/mbed,sam-geek/mbed,nabilbendafi/mbed,autopulated/mbed,NitinBhaskar/mbed,logost/mbed,kl-cruz/mbed-os,bcostm/mbed-os,rgrover/mbed,pradeep-gr/mbed-os5-onsemi,jferreir/mbed,alertby/mbed,naves-thiago/mbed-midi,jrjang/mbed,fvincenzo/mbed-os,iriark01/mbed-drivers,masaohamanaka/mbed,mmorenobarm/mbed-os,screamerbg/mbed,ryankurte/mbed-os,DanKupiniak/mbed,maximmbed/mbed,bcostm/mbed-os,andcor02/mbed-os,mmorenobarm/mbed-os,tung7970/mbed-os,jpbrucker/mbed,Willem23/mbed,radhika-raghavendran/mbed-os5.1-onsemi,fpiot/mbed-ats,JasonHow44/mbed,FranklyDev/mbed,andcor02/mbed-os,jrjang/mbed,NitinBhaskar/mbed,ARM-software/mbed-beetle,jamesadevine/mbed,bulislaw/mbed-os,larks/mbed,CalSol/mbed,logost/mbed,Tiryoh/mbed,hwfwgrp/mbed,alertby/mbed,RonEld/mbed,fpiot/mbed-ats,karsev/mbed-os,K4zuki/mbed,getopenmono/mbed,RonEld/mbed,alertby/mbed,getopenmono/mbed,masaohamanaka/mbed,Marcomissyou/mbed,rgrover/mbed,betzw/mbed-os,ARM-software/mbed-beetle,adustm/mbed,ryankurte/mbed-os,iriark01/mbed-drivers,pradeep-gr/mbed-os5-onsemi,ban4jp/mbed,infinnovation/mbed-os,Timmmm/mbed,naves-thiago/mbed-midi,alertby/mbed,nabilbendafi/mbed,j-greffe/mbed-os,kpurusho/mbed,cvtsi2sd/mbed-os,tung7970/mbed-os-1,pradeep-gr/mbed-os5-onsemi,adamgreen/mbed,kl-cruz/mbed-os,mnlipp/mbed,struempelix/mbed,radhika-raghavendran/mbed-os5.1-onsemi,0xc0170/mbed-drivers,NordicSemiconductor/mbed,jpbrucker/mbed,andcor02/mbed-os,tung7970/mbed-os-1,HeadsUpDisplayInc/mbed,adamgreen/mbed,ryankurte/mbed-os,theotherjimmy/mbed,HeadsUpDisplayInc/mbed,nvlsianpu/mbed,FranklyDev/mbed,svastm/mbed,theotherjimmy/mbed,Archcady/mbed-os,CalSol/mbed,kl-cruz/mbed-os,nabilbendafi/mbed,cvtsi2sd/mbed-os,arostm/mbed-os,fpiot/mbed-ats,devanlai/mbed,GustavWi/mbed,mikaleppanen/mbed-os,dbestm/mbed,al177/mbed,maximmbed/mbed,bulislaw/mbed-os,jeremybrodt/mbed,tung7970/mbed-os,GustavWi/mbed,bentwire/mbed,jpbrucker/mbed,Shengliang/mbed,nabilbendafi/mbed,getopenmono/mbed,ARM-software/mbed-beetle,Timmmm/mbed,K4zuki/mbed,svogl/mbed-os,ryankurte/mbed-os,devanlai/mbed,infinnovation/mbed-os,monkiineko/mbed-os,bentwire/mbed,fanghuaqi/mbed,svogl/mbed-os,YarivCol/mbed-os,fvincenzo/mbed-os,YarivCol/mbed-os,DanKupiniak/mbed,jferreir/mbed,larks/mbed,tung7970/mbed-os,maximmbed/mbed,kpurusho/mbed,fahhem/mbed-os,sg-/mbed-drivers,kl-cruz/mbed-os,fahhem/mbed-os,fanghuaqi/mbed,infinnovation/mbed-os,jamesadevine/mbed,ban4jp/mbed,Shengliang/mbed,brstew/MBED-BUILD,JasonHow44/mbed,Willem23/mbed,bikeNomad/mbed,naves-thiago/mbed-midi,nabilbendafi/mbed,rosterloh/mbed,Archcady/mbed-os,rosterloh/mbed,rosterloh/mbed,jeremybrodt/mbed,Tiryoh/mbed,fpiot/mbed-ats,wodji/mbed,HeadsUpDisplayInc/mbed,mnlipp/mbed,theotherjimmy/mbed,NXPmicro/mbed,logost/mbed,cvtsi2sd/mbed-os,FranklyDev/mbed,andcor02/mbed-os,Sweet-Peas/mbed,fpiot/mbed-ats,hwfwgrp/mbed,cvtsi2sd/mbed-os,nvlsianpu/mbed,Willem23/mbed,betzw/mbed-os,catiedev/mbed-os,pi19404/mbed,radhika-raghavendran/mbed-os5.1-onsemi,mazimkhan/mbed-os,xcrespo/mbed,brstew/MBED-BUILD,larks/mbed,bentwire/mbed,svastm/mbed,catiedev/mbed-os,alertby/mbed,wodji/mbed,YarivCol/mbed-os,netzimme/mbed-os,CalSol/mbed,catiedev/mbed-os,Archcady/mbed-os,bikeNomad/mbed,mbedmicro/mbed,bcostm/mbed-os,pi19404/mbed,infinnovation/mbed-os,nvlsianpu/mbed,monkiineko/mbed-os,logost/mbed,jpbrucker/mbed,kl-cruz/mbed-os,c1728p9/mbed-os,andcor02/mbed-os,NXPmicro/mbed,pi19404/mbed,al177/mbed,fvincenzo/mbed-os,Timmmm/mbed,autopulated/mbed,karsev/mbed-os,xcrespo/mbed,JasonHow44/mbed,betzw/mbed-os,pedromes/mbed,fahhem/mbed-os,NordicSemiconductor/mbed,devanlai/mbed,mnlipp/mbed,fanghuaqi/mbed,kl-cruz/mbed-os,kpurusho/mbed,mmorenobarm/mbed-os,fanghuaqi/mbed,karsev/mbed-os,FranklyDev/mbed,wodji/mbed,xcrespo/mbed,RonEld/mbed,rgrover/mbed,GustavWi/mbed,struempelix/mbed,Sweet-Peas/mbed,wodji/mbed,autopulated/mbed,nvlsianpu/mbed,netzimme/mbed-os,naves-thiago/mbed-midi,c1728p9/mbed-os,devanlai/mbed,pedromes/mbed,bikeNomad/mbed,logost/mbed,NitinBhaskar/mbed,bentwire/mbed,YarivCol/mbed-os,svogl/mbed-os,jrjang/mbed,arostm/mbed-os,radhika-raghavendran/mbed-os5.1-onsemi,hwfwgrp/mbed,autopulated/mbed,Shengliang/mbed,brstew/MBED-BUILD,pradeep-gr/mbed-os5-onsemi,larks/mbed,Marcomissyou/mbed,NXPmicro/mbed,GustavWi/mbed,pi19404/mbed,andreaslarssonublox/mbed,al177/mbed,NitinBhaskar/mbed,pi19404/mbed,HeadsUpDisplayInc/mbed,jrjang/mbed,Marcomissyou/mbed,devanlai/mbed,mnlipp/mbed,jamesadevine/mbed,Sweet-Peas/mbed,larks/mbed,fahhem/mbed-os,DanKupiniak/mbed,bcostm/mbed-os,sam-geek/mbed,EmuxEvans/mbed,struempelix/mbed,j-greffe/mbed-os,DanKupiniak/mbed,svastm/mbed,FranklyDev/mbed,dbestm/mbed,mnlipp/mbed,RonEld/mbed,pbrook/mbed,kpurusho/mbed,Willem23/mbed,al177/mbed,bremoran/mbed-drivers,adamgreen/mbed,screamerbg/mbed,jrjang/mbed,netzimme/mbed-os,adamgreen/mbed,mikaleppanen/mbed-os,rgrover/mbed,svogl/mbed-os,al177/mbed,screamerbg/mbed,wodji/mbed,andreaslarssonublox/mbed,bentwire/mbed,alertby/mbed,monkiineko/mbed-os,maximmbed/mbed,rgrover/mbed,netzimme/mbed-os,masaohamanaka/mbed,mazimkhan/mbed-os,bulislaw/mbed-os,ryankurte/mbed-os,struempelix/mbed,Tiryoh/mbed,NXPmicro/mbed,pbrook/mbed,Marcomissyou/mbed,fvincenzo/mbed-os,Marcomissyou/mbed,mikaleppanen/mbed-os,mazimkhan/mbed-os,pedromes/mbed,nRFMesh/mbed-os,arostm/mbed-os,Tiryoh/mbed,pedromes/mbed,arostm/mbed-os,brstew/MBED-BUILD,jrjang/mbed,Tiryoh/mbed,CalSol/mbed,Marcomissyou/mbed,pedromes/mbed,theotherjimmy/mbed,ban4jp/mbed,getopenmono/mbed,radhika-raghavendran/mbed-os5.1-onsemi,svogl/mbed-os,fvincenzo/mbed-os,infinnovation/mbed-os,jferreir/mbed,NitinBhaskar/mbed,bcostm/mbed-os,tung7970/mbed-os,geky/mbed,K4zuki/mbed,pradeep-gr/mbed-os5-onsemi,CalSol/mbed,NXPmicro/mbed,monkiineko/mbed-os,sam-geek/mbed,nRFMesh/mbed-os,tung7970/mbed-os,RonEld/mbed,rosterloh/mbed,betzw/mbed-os,hwfwgrp/mbed,sam-geek/mbed,cvtsi2sd/mbed-os,sg-/mbed-drivers,mikaleppanen/mbed-os,svastm/mbed,kpurusho/mbed,catiedev/mbed-os,tung7970/mbed-os-1,pi19404/mbed,jeremybrodt/mbed,xcrespo/mbed,masaohamanaka/mbed,bulislaw/mbed-os,adamgreen/mbed,pbrook/mbed,kpurusho/mbed,catiedev/mbed-os,kjbracey-arm/mbed,Archcady/mbed-os,adustm/mbed,larks/mbed,NordicSemiconductor/mbed,screamerbg/mbed,ban4jp/mbed,karsev/mbed-os,nabilbendafi/mbed,kjbracey-arm/mbed,karsev/mbed-os,j-greffe/mbed-os,geky/mbed,jferreir/mbed,bcostm/mbed-os,Timmmm/mbed,JasonHow44/mbed,EmuxEvans/mbed,mazimkhan/mbed-os,masaohamanaka/mbed,karsev/mbed-os,pedromes/mbed,mbedmicro/mbed,RonEld/mbed,adustm/mbed,naves-thiago/mbed-midi,CalSol/mbed,naves-thiago/mbed-midi,arostm/mbed-os,autopulated/mbed,maximmbed/mbed,hwfwgrp/mbed,geky/mbed,mikaleppanen/mbed-os,kjbracey-arm/mbed,jferreir/mbed,EmuxEvans/mbed,monkiineko/mbed-os,GustavWi/mbed,geky/mbed,al177/mbed,netzimme/mbed-os,xcrespo/mbed,jpbrucker/mbed,rosterloh/mbed,adustm/mbed,autopulated/mbed,struempelix/mbed,jamesadevine/mbed,Shengliang/mbed,infinnovation/mbed-os,mmorenobarm/mbed-os,getopenmono/mbed,adamgreen/mbed,YarivCol/mbed-os,netzimme/mbed-os,geky/mbed,dbestm/mbed,pradeep-gr/mbed-os5-onsemi,c1728p9/mbed-os,j-greffe/mbed-os,bulislaw/mbed-os,jamesadevine/mbed,mikaleppanen/mbed-os,NordicSemiconductor/mbed,svastm/mbed,HeadsUpDisplayInc/mbed,HeadsUpDisplayInc/mbed,nvlsianpu/mbed,ban4jp/mbed,mnlipp/mbed,mazimkhan/mbed-os,sam-geek/mbed,K4zuki/mbed,svogl/mbed-os,ban4jp/mbed,bikeNomad/mbed,nRFMesh/mbed-os,j-greffe/mbed-os,andreaslarssonublox/mbed,andreaslarssonublox/mbed,Archcady/mbed-os,Timmmm/mbed,JasonHow44/mbed,NXPmicro/mbed,betzw/mbed-os,monkiineko/mbed-os,Sweet-Peas/mbed,Timmmm/mbed,getopenmono/mbed,andreaslarssonublox/mbed,Tiryoh/mbed,catiedev/mbed-os,brstew/MBED-BUILD,kjbracey-arm/mbed,wodji/mbed,andcor02/mbed-os,pbrook/mbed,Shengliang/mbed,Sweet-Peas/mbed,pbrook/mbed,jpbrucker/mbed,fanghuaqi/mbed,Willem23/mbed,YarivCol/mbed-os,Shengliang/mbed,0xc0170/mbed-drivers,adustm/mbed,tung7970/mbed-os-1,devanlai/mbed,mbedmicro/mbed,fahhem/mbed-os,bentwire/mbed,screamerbg/mbed,K4zuki/mbed,cvtsi2sd/mbed-os,EmuxEvans/mbed,Sweet-Peas/mbed,Archcady/mbed-os,hwfwgrp/mbed,mazimkhan/mbed-os,c1728p9/mbed-os,ARM-software/mbed-beetle,brstew/MBED-BUILD,betzw/mbed-os,nRFMesh/mbed-os,jferreir/mbed,dbestm/mbed,JasonHow44/mbed,rosterloh/mbed,fpiot/mbed-ats,nRFMesh/mbed-os,adustm/mbed,theotherjimmy/mbed,jeremybrodt/mbed,tung7970/mbed-os-1,j-greffe/mbed-os,nvlsianpu/mbed,logost/mbed,bulislaw/mbed-os,masaohamanaka/mbed,mbedmicro/mbed,jamesadevine/mbed,K4zuki/mbed,ryankurte/mbed-os,theotherjimmy/mbed,mbedmicro/mbed,EmuxEvans/mbed,nRFMesh/mbed-os,xcrespo/mbed