Revert "arm64: boot-wrapper: Add mirror"

This reverts commit ef258a0a41.
Similar to 43c09f2885, multiple git
mirrors are not supported

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/linux/arm64/image/boot-wrapper/Makefile

@@ -11,9 +11,7 @@ PKG_NAME:=aarch64-boot-wrapper
 PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
-PKG_SOURCE_URL:=\
-		https://kernel.googlesource.com/pub/scm/linux/kernel/git/mark/boot-wrapper-aarch64 \
-		https://git.kernel.org/pub/scm/linux/kernel/git/mark/boot-wrapper-aarch64.git
+PKG_SOURCE_URL:=https://git.kernel.org/pub/scm/linux/kernel/git/mark/boot-wrapper-aarch64.git
 PKG_SOURCE_DATE:=2013-01-10
 PKG_SOURCE_VERSION:=c51dde817b5ed5b8f741b67ac51bd67bd87b4a2a
 PKG_MIRROR_HASH:=2f029a20c906af68e9fe067c1b0ed394e4c455e142454a039f41d1d82d6e17c8