[compiler] Remove compiler internals from CodeAssembler.

test/cctest/compiler/code-assembler-tester.h

Index: test/cctest/compiler/code-assembler-tester.h
diff --git a/test/cctest/compiler/code-assembler-tester.h b/test/cctest/compiler/code-assembler-tester.h
index 609a137f8c588139d650ea4a14f9b4646700fe5e..eb2d77a17124f0a7ab923b8299b2c7e0b51aa250 100644
--- a/test/cctest/compiler/code-assembler-tester.h
+++ b/test/cctest/compiler/code-assembler-tester.h
@@ -51,12 +51,6 @@ class CodeAssemblerTesterImpl : private ZoneHolder, public CodeAssemblerT {
     return scope_.CloseAndEscape(CodeAssemblerT::GenerateCode());
   }
 
-  // Expose some internal methods.
-
-  Node* SmiShiftBitsConstant() {
-    return CodeAssemblerT::SmiShiftBitsConstant();
-  }
-
  private:
   HandleScope scope_;
   LocalContext context_;