Make sure that on x86 we don't generate SSE2 code in the snapshot.

src/mips/assembler-mips.h

Index: src/mips/assembler-mips.h
diff --git a/src/mips/assembler-mips.h b/src/mips/assembler-mips.h
index c235a4d2b5d7df0f018c62cf86bba7472dd4b63a..1177181bde85c6aca14b4c65988bd9ae01826f3a 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -413,32 +413,6 @@ class CpuFeatures : public AllStatic {
             (static_cast<uint64_t>(1) << f)) != 0;
   }
 
-  class TryForceFeatureScope BASE_EMBEDDED {
-   public:
-    explicit TryForceFeatureScope(CpuFeature f)
-        : old_supported_(CpuFeatures::supported_) {
-      if (CanForce()) {
-        CpuFeatures::supported_ |= (1u << f);
-      }
-    }
-
-    ~TryForceFeatureScope() {
-      if (CanForce()) {
-        CpuFeatures::supported_ = old_supported_;
-      }
-    }
-
-   private:
-    static bool CanForce() {
-      // It's only safe to temporarily force support of CPU features
-      // when there's only a single isolate, which is guaranteed when
-      // the serializer is enabled.
-      return Serializer::enabled();
-    }
-
-    const unsigned old_supported_;
-  };
-
  private:
 #ifdef DEBUG
   static bool initialized_;