Allow deletion of a key from settings that is no longer in defaults (cherry picked from commit b04da70)
Allow deletion of a key from settings that is no longer in defaults
(cherry picked from commit b04da70)

nickverschoor/OctoPrint,Javierma/OctoPrint-TFG,masterhou/OctoPrint,Jaesin/OctoPrint,JackGavin13/octoprint-test-not-finished,bicephale/OctoPrint,eddieparker/OctoPrint,shohei/Octoprint,ryanneufeld/OctoPrint,CapnBry/OctoPrint,Mikk36/OctoPrint,Javierma/OctoPrint-TFG,ErikDeBruijn/OctoPrint,CapnBry/OctoPrint,beeverycreative/BEEweb,leductan-nguyen/RaionPi,senttech/OctoPrint,eliasbakken/OctoPrint,nicanor-romero/OctoPrint,Skeen/OctoPrint,bicephale/OctoPrint,eddieparker/OctoPrint,dansantee/OctoPrint,Jaesin/OctoPrint,bicephale/OctoPrint,punkkeks/OctoPrint,punkkeks/OctoPrint,shohei/Octoprint,nicanor-romero/OctoPrint,MaxOLydian/OctoPrint,Javierma/OctoPrint-TFG,MaxOLydian/OctoPrint,leductan-nguyen/RaionPi,MoonshineSG/OctoPrint,Mikk36/OctoPrint,ErikDeBruijn/OctoPrint,chriskoz/OctoPrint,punkkeks/OctoPrint,Skeen/OctoPrint,JackGavin13/octoprint-test-not-finished,JackGavin13/octoprint-test-not-finished,MoonshineSG/OctoPrint,CapnBry/OctoPrint,masterhou/OctoPrint,bicephale/OctoPrint,senttech/OctoPrint,ryanneufeld/OctoPrint,shohei/Octoprint,beeverycreative/BEEweb,nickverschoor/OctoPrint,chriskoz/OctoPrint,Salandora/OctoPrint,leductan-nguyen/RaionPi,dansantee/OctoPrint,beeverycreative/BEEweb,MaxOLydian/OctoPrint,dragondgold/OctoPrint,Javierma/OctoPrint-TFG,mcanes/OctoPrint,beeverycreative/BEEweb,senttech/OctoPrint,foosel/OctoPrint,Jaesin/OctoPrint,masterhou/OctoPrint,ryanneufeld/OctoPrint,ErikDeBruijn/OctoPrint,eliasbakken/OctoPrint,ryanneufeld/OctoPrint,CapnBry/OctoPrint,Salandora/OctoPrint,mcanes/OctoPrint,shohei/Octoprint,foosel/OctoPrint,Salandora/OctoPrint,dragondgold/OctoPrint,Skeen/OctoPrint,dragondgold/OctoPrint,chriskoz/OctoPrint,eliasbakken/OctoPrint,Jaesin/OctoPrint,senttech/OctoPrint,JackGavin13/octoprint-test-not-finished,chriskoz/OctoPrint,nickverschoor/OctoPrint,MoonshineSG/OctoPrint,nicanor-romero/OctoPrint,MoonshineSG/OctoPrint,Salandora/OctoPrint,nickverschoor/OctoPrint,foosel/OctoPrint,dansantee/OctoPrint,mcanes/OctoPrint,eddieparker/OctoPrint,Mikk36/OctoPrint,foosel/OctoPrint,leductan-nguyen/RaionPi,shohei/Octoprint