Remove unnecessary metrics dependency.

WiMAX manager does not currently use libmetrics.

BUG=None
TEST=Tested the following:
1. `FEATURES=test USE='gdmwimax wimax internal' emerge-{lumpy,daisy} platform2`
2. Run network_WiMaxSmoke test.

Change-Id: I1168e44d7bb21e4363b3895e09d253c371748e07
Reviewed-on: https://chromium-review.googlesource.com/186027
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
diff --git a/wimax_manager.gyp b/wimax_manager.gyp
index c1e2c11..9e6355d 100644
--- a/wimax_manager.gyp
+++ b/wimax_manager.gyp
@@ -2,7 +2,6 @@
   'target_defaults': {
     'dependencies': [
       '../libchromeos/libchromeos-<(libbase_ver).gyp:libchromeos-<(libbase_ver)',
-      '../metrics/metrics.gyp:libmetrics',
       '../system_api/system_api.gyp:system_api-power_manager-protos',
     ],
     'variables': {