mac: Remove CoreFoundation from the verify_dynamic_libraries allow lists

CoreFoundation was only needed for a __builtin_available check to
support Mac OS X 10.10, support for which has now been removed.

Bug: 1153883
Change-Id: I02fff5146387c56db4b1d3f061fc2e37f82b9100
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2579952
Commit-Queue: Nico Weber <thakis@chromium.org>
Auto-Submit: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#835305}

chrome/BUILD.gn

@@ -488,8 +488,6 @@ if (is_win) {
         rebase_path(inputs[0], root_out_dir),
         "--allow",
         "/usr/lib/libSystem.B.dylib",
-        "--allow",
-        "/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation",
       ]
       deps = [ ":chrome_app" ]
     }
@@ -714,8 +712,6 @@ if (is_win) {
           "/usr/lib/libsandbox.1.dylib",
           "--allow",
           "/usr/lib/libSystem.B.dylib",
-          "--allow",
-          "/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation",
         ]
         deps = [ ":chrome_helper_app_${_helper_target}" ]
       }