ci: disable failing Debian testing cross-compile builds

Debian cross-compile builds fail since months...

Signed-off-by: Krzysztof Kozlowski <[email protected]>

.github/workflows/ci.yml

@@ -127,34 +127,6 @@ jobs:
             variant: i386
 
           # Debian cross compilation builds
-          - container: "debian:testing"
-            arch: armhf
-            compiler: arm-linux-gnueabihf-gcc
-            cross_compile: arm-linux-gnueabihf
-            mode: maintainer
-            variant: cross-compile
-
-          - container: "debian:testing"
-            arch: arm64
-            compiler: aarch64-linux-gnu-gcc
-            cross_compile: aarch64-linux-gnu
-            mode: maintainer
-            variant: cross-compile
-
-          - container: "debian:testing"
-            arch: ppc64el
-            compiler: powerpc64le-linux-gnu-gcc
-            cross_compile: powerpc64le-linux-gnu
-            mode: maintainer
-            variant: cross-compile
-
-          - container: "debian:testing"
-            arch: s390x
-            compiler: s390x-linux-gnu-gcc
-            cross_compile: s390x-linux-gnu
-            mode: maintainer
-            variant: cross-compile
-
           - container: "debian:stable"
             arch: armhf
             compiler: arm-linux-gnueabihf-gcc