Revert "Suppress many less important clang-tidy warnings."

Replaced by default settings in build/clang/tidy.mk.
This reverts commit 0c1f83aee4709eef7ef2a3edd384f9c192f476fd.

Change-Id: Ib80b905e4a35a9e358d8841b0d18df2a0741ac15
diff --git a/Android.mk b/Android.mk
index 4711969..a94fbac 100644
--- a/Android.mk
+++ b/Android.mk
@@ -732,10 +732,6 @@
 	$(deqp_compile_flags) \
 	-Wno-error=date-time
 
-# Suppress about 947 clang-tidy warnings of google-explicit-constructor,
-# and 430 warnings of google-build-using-namespace.
-LOCAL_TIDY_CHECKS := -google-build-using-namespace,-google-explicit-constructor
-
 LOCAL_SDK_VERSION := 9
 LOCAL_CPPFLAGS += -Wno-non-virtual-dtor
 LOCAL_NDK_STL_VARIANT := gnustl_static