Remove SpeechRecorder from clockwork eng builds.

This is deprecated and safe to remove. The app currently shows up
in clockwork emulators.

Change-Id: Ia2370d80a5dd431d4251954dab39f4c747cb63e2

Bug: 24696853
diff --git a/Android.mk b/Android.mk
index 07beaef..6744d69 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,8 +1,6 @@
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 
-LOCAL_MODULE_TAGS := eng
-
 LOCAL_SRC_FILES := $(call all-subdir-java-files) \
 
 LOCAL_PACKAGE_NAME := SpeechRecorder