Removing keystore.default from core_tiny.mk and core_minimal.mk

keystore.default is not the current default implementation
and is not needed on running devices.

Bug: 65613798
Test: boot device

Change-Id: Ide82473d358719f7e01cd2a4a85db954f3722f14

target/product/core_minimal.mk

@@ -60,7 +60,6 @@ PRODUCT_PACKAGES += \
     iptables \
     gatekeeperd \
     keystore \
-    keystore.default \
     ld.config.txt \
     ld.mc \
     libaaudio \

target/product/core_tiny.mk

@@ -59,7 +59,6 @@ PRODUCT_PACKAGES += \
     iptables \
     gatekeeperd \
     keystore \
-    keystore.default \
     ld.mc \
     libaaudio \
     libOpenMAXAL \