Remove FORCE_PYTHON2 for configure

configure

@@ -4,7 +4,6 @@
 # Note that the mix of single and double quotes is intentional,
 # as is the fact that the ] goes on a new line.
 _=[ 'exec' '/bin/sh' '-c' '''
-test ${FORCE_PYTHON2} && exec python2 "$0" "$@"  # workaround for gclient
 command -v python3.9 >/dev/null && exec python3.9 "$0" "$@"
 command -v python3.8 >/dev/null && exec python3.8 "$0" "$@"
 command -v python3.7 >/dev/null && exec python3.7 "$0" "$@"