6104 remove obsolete env files

@@ -125,12 +125,10 @@
 file path=opt/onbld/bin/which_scm mode=0555
 file path=opt/onbld/bin/ws mode=0555
 file path=opt/onbld/bin/wsdiff mode=0555
 file path=opt/onbld/bin/xref mode=0555
 file path=opt/onbld/bin/xref.mk
-file path=opt/onbld/env/developer
-file path=opt/onbld/env/gatekeeper
 file path=opt/onbld/env/illumos
 file path=opt/onbld/etc/SampleLinks
 file path=opt/onbld/etc/SamplePkgLinks
 file path=opt/onbld/etc/exception_lists/check_rtime
 file path=opt/onbld/etc/exception_lists/interface_check