Fix removing locked files under windows
Fix removing locked files under windows

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