Remove pmurhash target.

The code causes a new compile warning, and it's unused. So stop
building it.

(See also aappleby/smhasher#81 failing
to get traction.)

Bug: 1054220,1058381
Change-Id: I68758e94cd2728df70e78c60e9be0bb4006a847a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2103719
Auto-Submit: Nico Weber <[email protected]>
Commit-Queue: Daniel Cheng <[email protected]>
Reviewed-by: Daniel Cheng <[email protected]>
Cr-Commit-Position: refs/heads/master@{#750421}

Author: nico

BUILD.gn

@@ -231,7 +231,6 @@ group("gn_all") {
       "//media/cast:cast_unittests",
       "//third_party/angle/src/tests:angle_white_box_tests",
       "//third_party/catapult/telemetry:bitmaptools($host_toolchain)",
-      "//third_party/smhasher:pmurhash",
     ]
   } else if (is_ios) {
     deps += [

third_party/smhasher/BUILD.gn

@@ -19,12 +19,3 @@ static_library("murmurhash3") {
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
 }
-
-static_library("pmurhash") {
-  sources = [
-    "src/PMurHash.c",
-    "src/PMurHash.h",
-  ]
-  configs -= [ "//build/config/compiler:chromium_code" ]
-  configs += [ "//build/config/compiler:no_chromium_code" ]
-}