Do not compress kernel for aarch64

SPECS/kernel.spec

@@ -288,8 +288,8 @@
 %define all_arch_configs %{name}-%{version}-aarch64*.config
 %define asmarch arm64
 %define hdrarch arm64
-%define make_target Image.gz
-%define kernel_image arch/arm64/boot/Image.gz
+%define make_target Image
+%define kernel_image arch/arm64/boot/Image
 %endif
 
 # To temporarily exclude an architecture from being built, add it to
@@ -1356,9 +1356,6 @@ BuildKernel() {
         exit 1
     fi
     mv vmlinuz.signed $SignImage
-    if [ "$KernelExtension" == "gz" ]; then
-        gzip -f9 $SignImage
-    fi
     # signkernel
     %endif