Revert "deps,win: increase msvs_shard in gyp for V8"

This reverts commit e8fba5f637c73ae7d654ee8adabd4b8b873c342e.

Author: targos

deps/v8/src/v8.gyp

@@ -1802,7 +1802,7 @@
           # When building Official, the .lib is too large and exceeds the 2G
           # limit. This breaks it into multiple pieces to avoid the limit.
           # See http://crbug.com/485155.
-          'msvs_shard': 10,
+          'msvs_shard': 4,
         }],
         ['component=="shared_library"', {
           'defines': [