Revert of Download the hermetic xcode toolchain on all bots that target mac.

scripts/slave/recipes/chromium_trybot.expected/dont_deapply_patch.json

Index: scripts/slave/recipes/chromium_trybot.expected/dont_deapply_patch.json
diff --git a/scripts/slave/recipes/chromium_trybot.expected/dont_deapply_patch.json b/scripts/slave/recipes/chromium_trybot.expected/dont_deapply_patch.json
index 055132d78c4cf5d86bcaec10990ee4e0c46d56eb..4b62ef6cd4ca52bb0b56e18c6af64132d3dd93b3 100644
--- a/scripts/slave/recipes/chromium_trybot.expected/dont_deapply_patch.json
+++ b/scripts/slave/recipes/chromium_trybot.expected/dont_deapply_patch.json
@@ -209,7 +209,6 @@
     ],
     "cwd": "[BUILDER_CACHE]/mac/src",
     "env": {
-      "FORCE_MAC_TOOLCHAIN": "1",
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json",
       "GYP_CHROMIUM_NO_ACTION": "1",
       "GYP_DEFINES": "archive_gpu_tests=1 clang=1 component=static_library dcheck_always_on=1 fastbuild=1 ffmpeg_branding=Chrome gomadir='[CACHE]/cipd/goma' internal_gles2_conform_tests=1 proprietary_codecs=1 target_arch=x64 test_isolation_mode=prepare use_goma=1",
@@ -358,7 +357,6 @@
     ],
     "cwd": "[BUILDER_CACHE]/mac/src",
     "env": {
-      "FORCE_MAC_TOOLCHAIN": "1",
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
     },
     "name": "generate_build_files (with patch)"
@@ -375,7 +373,6 @@
       "/path/to/tmp/json"
     ],
     "env": {
-      "FORCE_MAC_TOOLCHAIN": "1",
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
     },
     "name": "clang_revision",
@@ -427,7 +424,6 @@
       "base_unittests"
     ],
     "env": {
-      "FORCE_MAC_TOOLCHAIN": "1",
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
     },
     "name": "compile (with patch)",
@@ -472,7 +468,6 @@
     ],
     "cwd": "[BUILDER_CACHE]/mac",
     "env": {
-      "FORCE_MAC_TOOLCHAIN": "1",
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
     },
     "name": "base_unittests (with patch)"