Revert "[MIPS] Temporarily disable Mips shared-textrel errors"

This reverts commit 3dfd20aea49cf6ff75aa41e337ae8dd9817e6428 - the clang
version we are using has the mentioned permanent fix. The new build
system (Soong) uses a single list of unknown clang flags for all
architectures, so workarounds like this no longer work.

Change-Id: I64a83f3b52a9ca1d11a76df5a060a36f42e27e4b
diff --git a/core/clang/mips.mk b/core/clang/mips.mk
index 4a8f812..aeb2f6a 100644
--- a/core/clang/mips.mk
+++ b/core/clang/mips.mk
@@ -15,11 +15,6 @@
   -mno-synci \
   -mno-fused-madd
 
-# Temporary workaround for Mips clang++ problem,  creates
-#   relocated ptrs in read-only pic .gcc_exception_table;
-#   permanent fix pending at http://reviews.llvm.org/D9669
-CLANG_CONFIG_mips_UNKNOWN_CFLAGS += -Wl,--warn-shared-textrel
-
 # We don't have any mips flags to substitute yet.
 define subst-clang-incompatible-mips-flags
   $(1)
diff --git a/core/clang/mips64.mk b/core/clang/mips64.mk
index 1b72e05..20e87bd 100644
--- a/core/clang/mips64.mk
+++ b/core/clang/mips64.mk
@@ -15,11 +15,6 @@
   -mno-synci \
   -mno-fused-madd
 
-# Temporary workaround for Mips clang++ problem creating
-#   relocated ptrs in read-only pic .gcc_exception_table;
-#   permanent fix pending at http://reviews.llvm.org/D9669
-CLANG_CONFIG_mips64_UNKNOWN_CFLAGS += -Wl,--warn-shared-textrel
-
 # We don't have any mips64 flags to substitute yet.
 define subst-clang-incompatible-mips64-flags
   $(1)