[CQ bots] Remove closure_compilation regexp paths.

This CL drops the closure_compilation bot for everything except the
closure_compiler directory, since the bot only runs a Closure Compiler
test now.

Change-Id: I5f9149af0ff27ae87a294e72282e019ce926ce96
Reviewed-on: https://chromium-review.googlesource.com/c/1345790
Commit-Queue: calamity <calamity@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615801}

docs/infra/cq_builders.md

@@ -101,9 +101,7 @@ builder.
 * [closure_compilation](https://ci.chromium.org/p/chromium/builders/luci.chromium.try/closure_compilation) ([`cq.cfg` entry](https://cs.chromium.org/search/?q=package:%5Echromium$+file:cq.cfg+closure_compilation)) ([matching builders](https://cs.chromium.org/search/?q=file:trybots.py+closure_compilation))
 
   Path regular expressions:
-    * [`//components/offline_pages/resources/.+`](https://cs.chromium.org/chromium/src/components/offline_pages/resources/)
     * [`//third_party/closure_compiler/.+`](https://cs.chromium.org/chromium/src/third_party/closure_compiler/)
-    * [`//third_party/polymer/.+`](https://cs.chromium.org/chromium/src/third_party/polymer/)
 
 * [ios-simulator-cronet](https://ci.chromium.org/p/chromium/builders/luci.chromium.try/ios-simulator-cronet) ([`cq.cfg` entry](https://cs.chromium.org/search/?q=package:%5Echromium$+file:cq.cfg+ios-simulator-cronet)) ([matching builders](https://cs.chromium.org/search/?q=file:trybots.py+ios-simulator-cronet))
 

infra/config/branch/cq.cfg

@@ -112,9 +112,7 @@ verifiers {
       }
       builders {
         name: "closure_compilation"
-        path_regexp: "components/offline_pages/resources/.+"
         path_regexp: "third_party/closure_compiler/.+"
-        path_regexp: "third_party/polymer/.+"
       }
       builders {
         name: "ios-simulator-cronet"