[compiler] Remove obsolete comments.

R=jarin@chromium.org

Bug: 
Change-Id: I90c124253a9e307f914d889406965ada4c5ba404
Reviewed-on: https://chromium-review.googlesource.com/800070Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49762}

src/compiler/code-generator.cc

@@ -1000,8 +1000,6 @@ void CodeGenerator::AddTranslationForOperand(Translation* translation,
             literal = DeoptimizationLiteral(isolate()->factory()->true_value());
           }
         } else {
-          // TODO(jarin,bmeurer): We currently pass in raw pointers to the
-          // JSFunction::entry here. We should really consider fixing this.
           DCHECK(type == MachineType::Int32() ||
                  type == MachineType::Uint32() ||
                  type.representation() == MachineRepresentation::kWord32 ||
@@ -1019,8 +1017,6 @@ void CodeGenerator::AddTranslationForOperand(Translation* translation,
       case Constant::kInt64:
         // When pointers are 8 bytes, we can use int64 constants to represent
         // Smis.
-        // TODO(jarin,bmeurer): We currently pass in raw pointers to the
-        // JSFunction::entry here. We should really consider fixing this.
         DCHECK(type.representation() == MachineRepresentation::kWord64 ||
                type.representation() == MachineRepresentation::kTagged);
         DCHECK_EQ(8, kPointerSize);