Revert "ATest: GTest auto gen config support run-test-as."

This reverts commit fab820c5f16f3e8f40c294fbaeced0590819860d.

Reason for revert: sed -i requires an argument on mac, break build on mac.

Change-Id: I0b72e28968072afbbb862bd827ee59764dd8a0be
diff --git a/core/autogen_test_config.mk b/core/autogen_test_config.mk
index 4b912fb..a01d80f 100644
--- a/core/autogen_test_config.mk
+++ b/core/autogen_test_config.mk
@@ -34,16 +34,9 @@
 endif
 # Auto generating test config file for native test
 $(autogen_test_config_file): PRIVATE_MODULE_NAME := $(LOCAL_MODULE)
-$(autogen_test_config_file): PRIVATE_RUN_UID := $(LOCAL_RUN_TEST_AS)
 $(autogen_test_config_file) : $(autogen_test_config_template)
 	@echo "Auto generating test config $(notdir $@)"
 	$(hide) sed 's&{MODULE}&$(PRIVATE_MODULE_NAME)&g' $< > $@
-ifneq ($(LOCAL_RUN_TEST_AS),)
-	$(hide) sed -i 's&{UID_OPTION}&<option name="run-test-as" value="$(PRIVATE_RUN_UID)" />&g' $@
-else
-	$(hide) sed -i '/{UID_OPTION}/d' $@
-endif
-
 my_auto_generate_config := true
 else
 # Auto generating test config file for instrumentation test
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index ddb217b..07e34e1 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -244,7 +244,6 @@
 LOCAL_RMTYPEDEFS:=
 LOCAL_RRO_THEME:=
 LOCAL_RTTI_FLAG:=
-LOCAL_RUN_TEST_AS :=
 LOCAL_SANITIZE:=
 LOCAL_SANITIZE_DIAG:=
 LOCAL_SANITIZE_RECOVER:=
diff --git a/core/native_test_config_template.xml b/core/native_test_config_template.xml
index 077223e..a88d57c 100644
--- a/core/native_test_config_template.xml
+++ b/core/native_test_config_template.xml
@@ -23,7 +23,6 @@
     </target_preparer>
 
     <test class="com.android.tradefed.testtype.GTest" >
-        {UID_OPTION}
         <option name="native-test-device-path" value="/data/local/tmp" />
         <option name="module-name" value="{MODULE}" />
     </test>