[mips*] Do not flush icache in RelocInfo::apply.

The callers of this function already do the flushing (as its comment demands).

BUG=

Change-Id: Iff6720f4ddecb1a4569b6cac66eba4b857c46b17
Reviewed-on: https://chromium-review.googlesource.com/452504Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43718}

src/mips/assembler-mips-inl.h

@@ -92,8 +92,7 @@ void RelocInfo::apply(intptr_t delta) {
   if (IsInternalReference(rmode_) || IsInternalReferenceEncoded(rmode_)) {
     // Absolute code pointer inside code object moves with the code object.
     byte* p = reinterpret_cast<byte*>(pc_);
-    int count = Assembler::RelocateInternalReference(rmode_, p, delta);
-    Assembler::FlushICache(isolate_, p, count * sizeof(uint32_t));
+    Assembler::RelocateInternalReference(rmode_, p, delta);
   }
 }
 

src/mips64/assembler-mips64-inl.h

@@ -92,8 +92,7 @@ void RelocInfo::apply(intptr_t delta) {
   if (IsInternalReference(rmode_) || IsInternalReferenceEncoded(rmode_)) {
     // Absolute code pointer inside code object moves with the code object.
     byte* p = reinterpret_cast<byte*>(pc_);
-    int count = Assembler::RelocateInternalReference(rmode_, p, delta);
-    Assembler::FlushICache(isolate_, p, count * sizeof(uint32_t));
+    Assembler::RelocateInternalReference(rmode_, p, delta);
   }
 }