Revert "RM6785: Add 0x2000U to additional gralloc usage bits"

* No longer needed after 01a664d3742a0dc37f70da5abcf76cd33bcd244d

This reverts commit 7ce5139d4b97bddcb57b136298c838e6d50c12fd.
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 791d59a..381c9e3 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -48,7 +48,6 @@
 
 # Display
 TARGET_SCREEN_DENSITY := 420
-TARGET_ADDITIONAL_GRALLOC_10_USAGE_BITS := 0x2000U
 
 # Kernel
 BOARD_KERNEL_CMDLINE := bootopt=64S3,32N2,64N2