Remove MIPS support from Optimizing.

Test: aosp_taimen-userdebug boots.
Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 147346243
Change-Id: I97fdc15e568ae3fe390efb1da690343025f84944
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 0433384..c18399c 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -1525,17 +1525,6 @@
 
 #define FOR_EACH_CONCRETE_INSTRUCTION_ARM64(M)
 
-#ifndef ART_ENABLE_CODEGEN_mips
-#define FOR_EACH_CONCRETE_INSTRUCTION_MIPS(M)
-#else
-#define FOR_EACH_CONCRETE_INSTRUCTION_MIPS(M)                           \
-  M(MipsComputeBaseMethodAddress, Instruction)                          \
-  M(MipsPackedSwitch, Instruction)                                      \
-  M(IntermediateArrayAddressIndex, Instruction)
-#endif
-
-#define FOR_EACH_CONCRETE_INSTRUCTION_MIPS64(M)
-
 #ifndef ART_ENABLE_CODEGEN_x86
 #define FOR_EACH_CONCRETE_INSTRUCTION_X86(M)
 #else
@@ -1561,8 +1550,6 @@
   FOR_EACH_CONCRETE_INSTRUCTION_SHARED(M)                               \
   FOR_EACH_CONCRETE_INSTRUCTION_ARM(M)                                  \
   FOR_EACH_CONCRETE_INSTRUCTION_ARM64(M)                                \
-  FOR_EACH_CONCRETE_INSTRUCTION_MIPS(M)                                 \
-  FOR_EACH_CONCRETE_INSTRUCTION_MIPS64(M)                               \
   FOR_EACH_CONCRETE_INSTRUCTION_X86(M)                                  \
   FOR_EACH_CONCRETE_INSTRUCTION_X86_64(M)                               \
   FOR_EACH_CONCRETE_INSTRUCTION_X86_COMMON(M)
@@ -7309,7 +7296,7 @@
   }
 
   static bool CanCallRuntime(TypeCheckKind check_kind) {
-    // Mips currently does runtime calls for any other checks.
+    // TODO: Re-evaluate now that mips codegen has been removed.
     return check_kind != TypeCheckKind::kExactCheck;
   }
 
@@ -7876,9 +7863,6 @@
 #if defined(ART_ENABLE_CODEGEN_arm) || defined(ART_ENABLE_CODEGEN_arm64)
 #include "nodes_shared.h"
 #endif
-#ifdef ART_ENABLE_CODEGEN_mips
-#include "nodes_mips.h"
-#endif
 #if defined(ART_ENABLE_CODEGEN_x86) || defined(ART_ENABLE_CODEGEN_x86_64)
 #include "nodes_x86.h"
 #endif