Don't run nacl_integration tests on mac.

testing/buildbot/chromium.mac.json

Index: testing/buildbot/chromium.mac.json
diff --git a/testing/buildbot/chromium.mac.json b/testing/buildbot/chromium.mac.json
index fba413ded3508ba6f60691e94dbbe21ad93a2be8..232f279658cc6fdf850fd6513e6994dcf3d60ec2 100644
--- a/testing/buildbot/chromium.mac.json
+++ b/testing/buildbot/chromium.mac.json
@@ -367,12 +367,6 @@
           "can_use_on_swarming_builders": true
         }
       }
-    ],
-    "scripts": [
-      {
-        "name": "nacl_integration",
-        "script": "nacl_integration.py"
-      }
     ]
   },
   "Mac10.11 Tests": {
@@ -718,12 +712,6 @@
           "can_use_on_swarming_builders": true
         }
       }
-    ],
-    "scripts": [
-      {
-        "name": "nacl_integration",
-        "script": "nacl_integration.py"
-      }
     ]
   },
   "Mac10.9 Tests": {
@@ -1058,12 +1046,6 @@
           "can_use_on_swarming_builders": true
         }
       }
-    ],
-    "scripts": [
-      {
-        "name": "nacl_integration",
-        "script": "nacl_integration.py"
-      }
     ]
   },
   "Mac10.9 Tests (dbg)": {
@@ -1398,12 +1380,6 @@
           "can_use_on_swarming_builders": true
         }
       }
-    ],
-    "scripts": [
-      {
-        "name": "nacl_integration",
-        "script": "nacl_integration.py"
-      }
     ]
   }
 }