Revert "Implement cumulative timings for CompilerDriver."

This reverts commit df013175d1aa04641e5c6175f8c786e547d31654.
diff --git a/runtime/common_test.h b/runtime/common_test.h
index a75a513..ee95d5b 100644
--- a/runtime/common_test.h
+++ b/runtime/common_test.h
@@ -474,13 +474,12 @@
         }
       }
       class_linker_->FixupDexCaches(runtime_->GetResolutionMethod());
-      CumulativeLogger timer("Compilation times");
       compiler_driver_.reset(new CompilerDriver(verified_methods_data_.get(),
                                                 method_inliner_map_.get(),
                                                 compiler_backend, instruction_set,
                                                 instruction_set_features,
                                                 true, new CompilerDriver::DescriptorSet,
-                                                2, true, true, &timer));
+                                                2, true));
     }
     // We typically don't generate an image in unit tests, disable this optimization by default.
     compiler_driver_->SetSupportBootImageFixup(false);