Remove SCons temporary from requirements list (Circle CI fails)
Remove SCons temporary from requirements list (Circle CI fails)

platformio/platformio-core,dkuku/platformio,ZachMassia/platformio,valeros/platformio,platformio/platformio-core,mcanthony/platformio,atyenoria/platformio,eiginn/platformio,platformio/platformio,mseroczynski/platformio,mplewis/platformio