Don't let Telemetry use locally-built memtrack_helper.

Local builds might depend on libc++ and cause failures.
Proven working version is located in Cloud Storage and should be
used as the only version of memtrack_helper.

Bug: 768334
Change-Id: Ib64ae00239521d4dfc8eb9ae707120430b3c25d1
Reviewed-on: https://chromium-review.googlesource.com/681704Reviewed-by: Ned Nguyen <nednguyen@google.com>
Commit-Queue: Grigoriy Kraynov <kraynov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504117}

tools/perf/chrome_telemetry_build/binary_dependencies.json

@@ -62,22 +62,6 @@
           ]
         }
       }
-    },
-    "memtrack_helper": {
-      "file_info": {
-        "android_armeabi-v7a": {
-          "local_paths": [
-            "../../../out/Debug/memtrack_helper",
-            "../../../out/Release/memtrack_helper"
-          ]
-        },
-        "arm64-v8a": {
-          "local_paths": [
-            "../../../out/Debug/memtrack_helper",
-            "../../../out/Release/memtrack_helper"
-          ]
-        }
-      }
     }
   }
 }