Always build breakpad tools with Linux official build.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index e5315999a98d2aa158998d770f200a1d1b6abaa2..b25e5eedd2232c1e27e5aec06496a6141c5748c1 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -282,13 +282,6 @@
               '-ffunction-sections',
             ],
           },
-          # Some utility binaries need to be build with the host's native
-          # config (i.e. no 32-bit override).
-          'Tool': {
-            'cflags!': ['-m32', '-march=pentium4', '-msse2', '-mfpmath=sse'],
-            'ldflags!': ['-m32'],
-            'cflags': [ '-O2' ],
-          },
         },
         'variants': {
           'coverage': {