Remove bot id dimension from fyi android builders

Bug: 790326, 790270, 790301, 790300, 790288
Change-Id: I4b13502698c574b9b7cb5c29f33ce37ea0e82a0f
Reviewed-on: https://chromium-review.googlesource.com/1162918Reviewed-by: Jao-ke Chin-Lee <jchinlee@chromium.org>
Commit-Queue: Ryan Tseng <hinoka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580714}

infra/config/global/cr-buildbucket.cfg

@@ -1513,7 +1513,6 @@ buckets {
     builders {
       name: "Android ChromeDriver Tests (dbg)"
       dimensions: "os:Ubuntu-14.04"
-      dimensions: "id:build91-b1"
       mixins: "fyi-ci"
     }
     builders {
@@ -1691,7 +1690,6 @@ buckets {
     builders {
       name: "Android Remoting Tests"
       dimensions: "os:Ubuntu-14.04"
-      dimensions: "id:build65-b1"
       mixins: "fyi-ci"
     }
     builders {
@@ -2001,7 +1999,6 @@ buckets {
     builders {
       name: "Android Find Annotated Test"
       dimensions: "os:Ubuntu-14.04"
-      dimensions: "id:build65-b1"
       mixins: "fyi-ci"
     }
     builders {