extra: gapps: Move shamu to custom stock package

* after dexpreopt we do't ahve neough space :(

gapps.mk

@@ -3,8 +3,7 @@ LOCAL_PATH := $(call my-dir)
 STOCK_GAPPS_DEVICES += \
     %berkeley \
     %ether \
-    %nash \
+    %nash
-    %shamu
 
 NANO_GAPPS_DEVICES += \
     %bacon \
@@ -17,6 +16,9 @@ PICO_GAPPS_DEVICES += \
     %jfltexx \
     %yellowstone
 
+MOST_GAPPS_DEVICES += \
+    %shamu
+
 FLASH_GAPPS_DEVICES += \
     %flo