Remove all wheels used by run_latency_test.py from the root vpython spec

The script was removed in crrev.com/c/1867257, so (hopefully) the
wheels only it needed are no longer necessary.

Incidentally, this will help certain tests on CrOS which use the root
vpython spec, but don't have the room for the whole venv. By removing
scipy, there will now be enough room.

Bug: 1053547
Change-Id: I8cda733283ff379c93ec027c97935cb8c6ff915c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2065419
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743193}

.vpython

@@ -91,7 +91,6 @@ wheel: <
 
 # Used by:
 #   third_party/catapult
-#   chrome/test/vr/perf/latency/run_latency_test.py
 #
 # This version must be compatible with the version range specified by
 # //third_party/catapult/telemetry/telemetry/internal/util/external_modules.py
@@ -190,37 +189,6 @@ wheel: <
   version: "version:2.7.3"
 >
 
-# Used by:
-#   chrome/test/vr/perf/latency/run_latency_test.py
-wheel: <
-  name: "infra/python/wheels/peakutils-py2_py3"
-  version: "version:1.0.3"
-  match_tag: <
-    abi: "cp27mu"
-    platform: "manylinux1_i686"
-  >
-  match_tag: <
-    abi: "cp27mu"
-    platform: "manylinux1_x86_64"
-  >
->
-wheel: <
-  name: "infra/python/wheels/pyserial-py2_py3"
-  version: "version:3.4"
->
-wheel: <
-  name: "infra/python/wheels/scipy/${vpython_platform}"
-  version: "version:0.19.0"
-  match_tag: <
-    abi: "cp27mu"
-    platform: "manylinux1_i686"
-  >
-  match_tag: <
-    abi: "cp27mu"
-    platform: "manylinux1_x86_64"
-  >
->
-
 # Used by:
 #   content/test/gpu/gpu_tests/color_profile_manager_mac.py
 # Note: there's a version of this wheel for even older OS versions,