Remove remaining MIPS support.

With the exception of dwarf support in libelffile.

Test: aosp_taimen-userdebug boots.
Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 147346243
Change-Id: Ib25acbc98aa7f63ce49a7ed2f81a4a64d48eac39
diff --git a/test/run-test b/test/run-test
index 4d62c6f..66039b7 100755
--- a/test/run-test
+++ b/test/run-test
@@ -627,8 +627,8 @@
             target_arch_name=x86
         fi
     else
-        grep32bit=`ls ${ANDROID_PRODUCT_OUT}/data/art-test | grep -E '^(arm|x86|mips)$'`
-        grep64bit=`ls ${ANDROID_PRODUCT_OUT}/data/art-test | grep -E '^(arm64|x86_64|mips64)$'`
+        grep32bit=`ls ${ANDROID_PRODUCT_OUT}/data/art-test | grep -E '^(arm|x86)$'`
+        grep64bit=`ls ${ANDROID_PRODUCT_OUT}/data/art-test | grep -E '^(arm64|x86_64)$'`
         if [ "x${suffix64}" = "x64" ]; then
             target_arch_name=${grep64bit}
         else