Remove MIPS support from runtime/.

Test: aosp_taimen-userdebug boots.
Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 147346243
Change-Id: If1fc8be94caa69f734438d7a1f4c715addfd8876
diff --git a/libartbase/base/mem_map_test.cc b/libartbase/base/mem_map_test.cc
index 938cff7..64fd6c0 100644
--- a/libartbase/base/mem_map_test.cc
+++ b/libartbase/base/mem_map_test.cc
@@ -19,8 +19,8 @@
 #include <memory>
 #include <random>
 
+#include "bit_utils.h"
 #include "common_art_test.h"
-#include "common_runtime_test.h"  // For TEST_DISABLED_FOR_MIPS
 #include "logging.h"
 #include "memory_tool.h"
 #include "mman.h"
@@ -503,10 +503,6 @@
 }
 
 TEST_F(MemMapTest, MapAnonymousExactAddr32bitHighAddr) {
-  // Some MIPS32 hardware (namely the Creator Ci20 development board)
-  // cannot allocate in the 2GB-4GB region.
-  TEST_DISABLED_FOR_MIPS();
-
   // This test does not work under AddressSanitizer.
   // Historical note: This test did not work under Valgrind either.
   TEST_DISABLED_FOR_MEMORY_TOOL();