cr-buildbucket: update linux_chromium_rel_ng

cr-buildbucket.cfg

 # Defines buckets on cr-buildbucket.appspot.com, used by to schedule builds
 # on buildbot. In particular, CQ uses some of these buckets to schedule tryjobs.
 #
 # See http://luci-config.appspot.com/schemas/projects:buildbucket.cfg for
 # schema of this file and documentation. Also see README.md in this dir.
 #
 # Please keep this list sorted by bucket name.
 
 acl_sets {
   name: "waterfall"
@@ skipping 103 matching lines @@
   swarming {
     hostname: "chromium-swarm.appspot.com"
     url_format: "https://luci-milo.appspot.com/swarming/task/{task_id}"
     #task_template_canary_percentage: 0
 
     builder_defaults {
       swarming_tags: "allow_milo:1"
       dimensions: "cpu:x86-64"
       dimensions: "os:Ubuntu-14.04"
       dimensions: "pool:Chrome.LUCI"
-      caches {
-        # Contains bare .git repositories that are used as git cache stored
-        # on the bots. Used by bot_update recipe module
-        name: "git_cache"
-        path: "git_cache"
-      }
       recipe {
         repository: "https://chromium.googlesource.com/chromium/tools/build.git"
         properties: "mastername:luci.chromium.try"
-        properties: "path_config:kitchen"
+        name: "chromium_trybot"
       }
       execution_timeout_secs: 5400  # 90 min
     }
 
     # Keep builders sorted by category, then name.
     builders {
       category: "Chromium CQ"
       name: "LUCI linux_chromium_rel_ng"
-      dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-14.04"
-      recipe {
-        name: "chromium_trybot"
-      }
     }
   }
 }