Broke the build.
Revert "ext4_utils: Fix LOCAL_MODULE_TAGS on img2simg and simg2img"

This reverts commit eec2bb9fda7772d8927603a29ca0880b8b10a8ed
diff --git a/ext4_utils/Android.mk b/ext4_utils/Android.mk
index ddf74cf..ab0f26b 100644
--- a/ext4_utils/Android.mk
+++ b/ext4_utils/Android.mk
@@ -84,7 +84,6 @@
 LOCAL_SRC_FILES := simg2img.c \
 	sparse_crc32.c
 LOCAL_MODULE := simg2img
-LOCAL_MODULE_TAGS := debug
 
 include $(BUILD_HOST_EXECUTABLE)
 
@@ -93,7 +92,6 @@
 LOCAL_SRC_FILES := simg2img.c \
 	sparse_crc32.c
 LOCAL_MODULE := simg2img
-LOCAL_MODULE_TAGS := optional
 
 include $(BUILD_EXECUTABLE)
 
@@ -103,7 +101,7 @@
 
 LOCAL_SRC_FILES := img2simg.c
 LOCAL_MODULE := img2simg
-LOCAL_MODULE_TAGS := debug
+LOCAL_MODULE_TAGS := optional
 
 include $(BUILD_HOST_EXECUTABLE)
 endif