Remove redundant MSVC 4267 warning

Change-Id: I9ff8405360e592522582ba68d30debd05e620d1d
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/104970
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index 14c123b..c50a783 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -164,8 +164,7 @@
                     # signed/unsigned mismatch
 
         "/wd4267",  # 'var' : conversion from 'size_t' to 'type', possible loss
-                    # of
-                    # data
+                    # of data
 
         "/wd4305",  # 'identifier' : truncation from 'type1' to 'type2'
         "/wd4389",  # 'operator' : signed/unsigned mismatch
@@ -197,14 +196,6 @@
       ]
 
       if (current_cpu == "x86") {
-        cflags += [
-          # VC++ 2015 changes 32-bit size_t truncation warnings from 4244 to
-          # 4267. Example: short TruncTest(size_t x) { return x; }
-          # Since we disable 4244 we need to disable 4267 during migration.
-          # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-          "/wd4267",
-        ]
-
         if (msvc_use_sse2) {
           cflags += [ "/arch:SSE2" ]
         }