[build] Enable -Wformat-pedantic compiler warning

For cross-compiler-compatibility and standards compliance %p
requires a void*, rather than any pointer type.

This was fixed in:
https://codereview.chromium.org/2001073002/

BUG=chromium:474921

Review-Url: https://codereview.chromium.org/2011483002
Cr-Commit-Position: refs/heads/master@{#36473}

gypfiles/standalone.gypi

@@ -445,26 +445,6 @@
         # things when their commandline changes). Nothing should ever read this
         # define.
         'defines': ['CR_CLANG_REVISION=<!(python <(DEPTH)/tools/clang/scripts/update.py --print-revision)'],
-        'conditions': [
-          ['host_clang==1', {
-            'target_conditions': [
-              ['_toolset=="host"', {
-                'cflags+': [
-                  '-Wno-format-pedantic',
-                 ],
-              }],
-           ],
-          }],
-          ['clang==1', {
-            'target_conditions': [
-              ['_toolset=="target"', {
-                'cflags+': [
-                  '-Wno-format-pedantic',
-                 ],
-              }],
-           ],
-          }],
-        ],
       }],
       ['clang==1 and target_arch=="ia32"', {
         'cflags': ['-mstack-alignment=16', '-mstackrealign'],