Revert "Add one variable to decide if need TTS voice packs"

This reverts commit b52878371b4d29dbba7b0c19c4d34bf57cbd4f5f.

Reason for revert: <Need preload TTS voice packs. If we need this patch, please just phase in the factory branch>

Bug: 140145973
Change-Id: Iacbe0cac6f7d68eac8b2155795e918edd1e73e25
diff --git a/device.mk b/device.mk
index 45b7da8..4787315 100644
--- a/device.mk
+++ b/device.mk
@@ -14,9 +14,7 @@
 # limitations under the License.
 #
 
-ifeq (,$(filter true, $(PRODUCT_WITHOUT_TTS_VOICE_PACKS)))
 include device/google/gs-common/tts/voice_packs.mk
-endif
 
 PRODUCT_SOONG_NAMESPACES += \
 	device/google/gs-common/powerstats