.shippable: temporaily disable some cross builds

These currently fail due to Debian bug #960271 as the
linux-libc-library has a user-space build breaking symbol in it.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200605154929.26910-7-alex.bennee@linaro.org>

.shippable.yml

@@ -5,8 +5,8 @@ env:
   global:
     - LC_ALL=C
   matrix:
-    - IMAGE=debian-amd64
-      TARGET_LIST=x86_64-softmmu,x86_64-linux-user
+    # - IMAGE=debian-amd64
+    #   TARGET_LIST=x86_64-softmmu,x86_64-linux-user
     - IMAGE=debian-win32-cross
       TARGET_LIST=arm-softmmu,i386-softmmu,lm32-softmmu
     - IMAGE=debian-win64-cross
@@ -19,10 +19,10 @@ env:
       TARGET_LIST=aarch64-softmmu,aarch64-linux-user
     - IMAGE=debian-s390x-cross
       TARGET_LIST=s390x-softmmu,s390x-linux-user
-    - IMAGE=debian-mips-cross
-      TARGET_LIST=mips-softmmu,mipsel-linux-user
-    - IMAGE=debian-mips64el-cross
-      TARGET_LIST=mips64el-softmmu,mips64el-linux-user
+    # - IMAGE=debian-mips-cross
+    #   TARGET_LIST=mips-softmmu,mipsel-linux-user
+    # - IMAGE=debian-mips64el-cross
+    #   TARGET_LIST=mips64el-softmmu,mips64el-linux-user
     - IMAGE=debian-ppc64el-cross
       TARGET_LIST=ppc64-softmmu,ppc64-linux-user,ppc64abi32-linux-user
 build: