axolotl: Removing GSI keys

Those keys will be embedded into VtsSecurityAvb on host side
instead, to verify the GSI image used on the device.

Bug: 149806769
Test: build and checks those keys are removed from
      $OUT/recovery/root/first_stage_ramdisk/avb/
Change-Id: I8a002ba6f1421fb460056ccae6572050bdb0ce3c
diff --git a/device.mk b/device.mk
index 413d4f9..bfa0b89 100644
--- a/device.mk
+++ b/device.mk
@@ -13,9 +13,6 @@
 endif
 $(call inherit-product, $(SRC_TARGET_DIR)/product/full_base_telephony.mk)
 
-# Installs gsi keys into ramdisk, to boot a GSI with verified boot.
-$(call inherit-product, $(SRC_TARGET_DIR)/product/gsi_keys.mk)
-
 # Inherit vendor blobs
 $(call inherit-product, vendor/shift/axolotl/axolotl-vendor.mk)