MIPS: Enable the ComparisonsLong test in the code generator test.

Test: test-art-host-gtest-codegen_test
Test: test-art-target-gtest-codegen_test (MIPS32R2 & R6, MIPS64)

Change-Id: Ieae0fdb2ed30f262baac0eb7c6b658341c511a47
diff --git a/compiler/optimizing/codegen_test.cc b/compiler/optimizing/codegen_test.cc
index d9347f6..070cbb3 100644
--- a/compiler/optimizing/codegen_test.cc
+++ b/compiler/optimizing/codegen_test.cc
@@ -1007,17 +1007,7 @@
 }
 
 TEST_F(CodegenTest, ComparisonsLong) {
-  // TODO: make MIPS work for long
-  if (kRuntimeISA == kMips || kRuntimeISA == kMips64) {
-    return;
-  }
-
   for (CodegenTargetConfig target_config : GetTargetConfigs()) {
-    if ((target_config.GetInstructionSet() == kMips) ||
-        (target_config.GetInstructionSet() == kMips64)) {
-      continue;
-    }
-
     for (int64_t i = -1; i <= 1; i++) {
       for (int64_t j = -1; j <= 1; j++) {
         for (int cond = kCondFirst; cond <= kCondLast; cond++) {