cli: Don't give character value 3 (CTRL-C) any special treatment. [#57] (#64)
cli: Don't give character value 3 (CTRL-C) any special treatment. [#57] (#64)

This was originally here because of some misconfigured TTY settings,
and can cause problems when running on embedded devices.

Since the misconfigured TTY settings have been addressed, this check
is no longer needed.
jjlee3/openthread,georgecpr/openthread,jjlee9/openthread,nibanks/openthread,xiaom-GitHub/openthread,gandreello/openthread,GiedriusM/openthread,chshu/openthread,mszczodrak/openthread,lanyuwen/openthread,nibanks/openthread,abtink/openthread,vaas-krish/openthread,georgecpr/openthread,JakubBrachTieto/openthread,srickardti/openthread,xiaom-GitHub/openthread,srickardti/openthread,turon/openthread,srickardti/openthread,fbsder/openthread,mszczodrak/openthread,aeliot/openthread,openthread/openthread,librasungirl/openthread,jwhui/openthread,erja-gp/openthread,LeZhang2016/openthread,vaas-krish/openthread,jjlee9/openthread,chshu/openthread,nibanks/openthread,LeZhang2016/openthread,bukepo/openthread,LeZhang2016/openthread,librasungirl/openthread,nibanks/openthread,turon/openthread,nibanks/openthread,pvanhorn/openthread,Zolertia/openthread,mszczodrak/openthread,lanyuwen/openthread,pvanhorn/openthread,gandreello/openthread,JakubBrachTieto/openthread,chshu/openthread,jjlee9/openthread,vaas-krish/openthread,abtink/openthread,vaas-krish/openthread,xiaom-GitHub/openthread,JakubBrachTieto/openthread,fbsder/openthread,xiaom-GitHub/openthread,erja-gp/openthread,chshu/openthread,nibanks/openthread,bukepo/openthread,gandreello/openthread,erja-gp/openthread,LeZhang2016/openthread,aeliot/openthread,erja-gp/openthread,fbsder/openthread,aeliot/openthread,mszczodrak/openthread,jwhui/openthread,JakubBrachTieto/openthread,Zolertia/openthread,lanyuwen/openthread,JakubBrachTieto/openthread,georgecpr/openthread,LeZhang2016/openthread,georgecpr/openthread,chshu/openthread,fbsder/openthread,fbsder/openthread,LeZhang2016/openthread,jjlee3/openthread,aeliot/openthread,GiedriusM/openthread,lanyuwen/openthread,GiedriusM/openthread,turon/openthread,gandreello/openthread,lanyuwen/openthread,Zolertia/openthread,jjlee9/openthread,openthread/openthread,vaas-krish/openthread,aeliot/openthread,GiedriusM/openthread,erja-gp/openthread,erja-gp/openthread,turon/openthread,jjlee3/openthread,bukepo/openthread,bukepo/openthread,georgecpr/openthread,GiedriusM/openthread,Zolertia/openthread,aeliot/openthread,mszczodrak/openthread,gandreello/openthread,mszczodrak/openthread,chshu/openthread,abtink/openthread,xiaom-GitHub/openthread,pvanhorn/openthread,fbsder/openthread,jjlee3/openthread,abtink/openthread,jjlee9/openthread,jwhui/openthread,JakubBrachTieto/openthread,jjlee9/openthread,openthread/openthread,librasungirl/openthread,srickardti/openthread,lanyuwen/openthread,pvanhorn/openthread,vaas-krish/openthread,xiaom-GitHub/openthread,pvanhorn/openthread,pvanhorn/openthread,Zolertia/openthread,jwhui/openthread,librasungirl/openthread,gandreello/openthread,openthread/openthread,jjlee3/openthread,georgecpr/openthread