stop depsing in gyp

made possible by https://chromium-review.googlesource.com/c/chromium/src/+/1063611

Bug: chromium:826218
Change-Id: Id3123de5705c91beb0a5eb87ca4490fe55a7de01
Reviewed-on: https://chromium-review.googlesource.com/1201002Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55591}

.gitignore

@@ -68,7 +68,6 @@
 /tools/clang
 /tools/gcmole/gcmole-tools
 /tools/gcmole/gcmole-tools.tar.gz
-/tools/gyp
 /tools/jsfunfuzz/jsfunfuzz
 /tools/jsfunfuzz/jsfunfuzz.tar.gz
 /tools/luci-go

DEPS

@@ -14,8 +14,6 @@ vars = {
 deps = {
   'v8/build':
     Var('chromium_url') + '/chromium/src/build.git' + '@' + '6773a0d18e3e24ba084907c15e13b37a8c10d499',
-  'v8/tools/gyp':
-    Var('chromium_url') + '/external/gyp.git' + '@' + '81286d388abf5c8f946f3f4be274bd987a690952',
   'v8/third_party/depot_tools':
     Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + 'e323bd9d2263bec69e692526123bacfc2cb84b16',
   'v8/third_party/icu':