Remove MIPS support

build/toolchain/android/BUILD.gn

Index: build/toolchain/android/BUILD.gn
diff --git a/build/toolchain/android/BUILD.gn b/build/toolchain/android/BUILD.gn
index 51f03206088698eaa4a4fd1febb980c4401ce277..f6806099e7749492bbae7881753659fd16a97e73 100644
--- a/build/toolchain/android/BUILD.gn
+++ b/build/toolchain/android/BUILD.gn
@@ -132,14 +132,6 @@ android_gcc_toolchains_helper("arm") {
   toolchain_cpu = "arm"
 }
 
-android_gcc_toolchains_helper("mipsel") {
-  android_ndk_sysroot = "$android_ndk_root/$mips_android_sysroot_subdir"
-  android_ndk_lib_dir = "usr/lib"
-
-  tool_prefix = "$mips_android_toolchain_root/bin/mipsel-linux-android-"
-  toolchain_cpu = "mipsel"
-}
-
 android_gcc_toolchains_helper("x64") {
   android_ndk_sysroot = "$android_ndk_root/$x86_64_android_sysroot_subdir"
   android_ndk_lib_dir = "usr/lib64"
@@ -155,11 +147,3 @@ android_gcc_toolchains_helper("arm64") {
   tool_prefix = "$arm64_android_toolchain_root/bin/aarch64-linux-android-"
   toolchain_cpu = "aarch64"
 }
-
-android_gcc_toolchains_helper("mips64el") {
-  android_ndk_sysroot = "$android_ndk_root/$mips64_android_sysroot_subdir"
-  android_ndk_lib_dir = "usr/lib64"
-
-  tool_prefix = "$mips64_android_toolchain_root/bin/mipsel-linux-android-"
-  toolchain_cpu = "mipsel64el"
-}