vpython(3) no longer needs to bootstrap python.

The bundled python interpreter is used instead.

Bug: 1318617
Change-Id: I86c359ad765ecf494a11d199f2e01a711c86d4c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3807202
Reviewed-by: Gavin Mak <gavinmak@google.com>
Commit-Queue: Brian Ryner <bryner@google.com>

vpython

@@ -43,16 +43,8 @@ cipd_bin_setup &> /dev/null
 
 echo $@ from $(pwd) >> "$base_dir/python2_usage.txt"
 
-# If Python bootstrapping is not disabled, make sure Python has been
-# bootstrapped and add it to the front of PATH.
 if [[ $(uname -s) = MINGW* || $(uname -s) = CYGWIN* ]]; then
   cmd.exe //c $0.bat "$@"
-elif [[ $DEPOT_TOOLS_BOOTSTRAP_PYTHON3 != 0 ]]; then
-  if [[ ! -e "$base_dir/python_bin_reldir.txt" ]]; then
-    source "$base_dir/bootstrap_python3"
-    bootstrap_python3
-  fi
-  exec "$base_dir/.cipd_bin/vpython" "$@"
 else
   exec "$base_dir/.cipd_bin/vpython" "$@"
 fi

vpython3

@@ -39,16 +39,8 @@ base_dir=$(dirname "$0")
 source "$base_dir/cipd_bin_setup.sh"
 cipd_bin_setup &> /dev/null
 
-# If Python bootstrapping is not disabled, make sure Python has been
-# bootstrapped and add it to the front of PATH.
 if [[ $(uname -s) = MINGW* || $(uname -s) = CYGWIN* ]]; then
   cmd.exe //c $0.bat "$@"
-elif [[ $DEPOT_TOOLS_BOOTSTRAP_PYTHON3 != 0 ]]; then
-  if [[ ! -e "$base_dir/python3_bin_reldir.txt" ]]; then
-    source "$base_dir/bootstrap_python3"
-    bootstrap_python3
-  fi
-  exec "$base_dir/.cipd_bin/vpython3" "$@"
 else
   exec "$base_dir/.cipd_bin/vpython3" "$@"
 fi