Re-land: Removed virtualenv from depot_tools

bootstrap/virtualenv/virtualenv_embedded/activate.csh

Index: bootstrap/virtualenv/virtualenv_embedded/activate.csh
diff --git a/bootstrap/virtualenv/virtualenv_embedded/activate.csh b/bootstrap/virtualenv/virtualenv_embedded/activate.csh
deleted file mode 100644
index 9db774437d63a3efda06d47bb903338171f4abdb..0000000000000000000000000000000000000000
--- a/bootstrap/virtualenv/virtualenv_embedded/activate.csh
+++ /dev/null
@@ -1,42 +0,0 @@
-# This file must be used with "source bin/activate.csh" *from csh*.
-# You cannot run it directly.
-# Created by Davide Di Blasi <davidedb@gmail.com>.
-
-alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; test "\!:*" != "nondestructive" && unalias deactivate && unalias pydoc'
-
-# Unset irrelevant variables.
-deactivate nondestructive
-
-setenv VIRTUAL_ENV "__VIRTUAL_ENV__"
-
-set _OLD_VIRTUAL_PATH="$PATH"
-setenv PATH "$VIRTUAL_ENV/__BIN_NAME__:$PATH"
-
-
-
-if ("__VIRTUAL_PROMPT__" != "") then
-    set env_name = "__VIRTUAL_PROMPT__"
-else
-    if (`basename "$VIRTUAL_ENV"` == "__") then
-        # special case for Aspen magic directories
-        # see http://www.zetadev.com/software/aspen/
-        set env_name = `basename \`dirname "$VIRTUAL_ENV"\``
-    else
-        set env_name = `basename "$VIRTUAL_ENV"`
-    endif
-endif
-
-# Could be in a non-interactive environment,
-# in which case, $prompt is undefined and we wouldn't
-# care about the prompt anyway.
-if ( $?prompt ) then
-    set _OLD_VIRTUAL_PROMPT="$prompt"
-    set prompt = "[$env_name] $prompt"
-endif
-
-unset env_name
-
-alias pydoc python -m pydoc
-
-rehash
-