debugd: Remove libbase_ver override in gyp file.

CL:194476 modified platform2 to build against libchrome-242728. The
libbase_ver override in the gyp file is no longer needed.

BUG=chromium:361748
TEST=`FEATURES=test emerge-$BOARD platform2`
TEST=Verify that debugd is linked against libchrome-242728.

Change-Id: I17fba8b587274b2966f68506a85cd87eb1535b17
Reviewed-on: https://chromium-review.googlesource.com/196724
Commit-Queue: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
diff --git a/debugd.gyp b/debugd.gyp
index fbb7764..182ffaa 100644
--- a/debugd.gyp
+++ b/debugd.gyp
@@ -1,7 +1,4 @@
 {
-  'variables': {
-    'libbase_ver': 242728,
-  },
   'target_defaults': {
     'dependencies': [
       '../libchromeos/libchromeos-<(libbase_ver).gyp:libchromeos-<(libbase_ver)',