[PATCH] ci: drop building on CentOS 6

[Doug Goldstein <cardoe@xxxxxxxxxx>]

CentOS 6 is no longer supported by upstream so we cannot test against it
for future Xen releases.

Signed-off-by: Doug Goldstein <cardoe@xxxxxxxxxx>
---
CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CC: George Dunlap <george.dunlap@xxxxxxxxxx>
CC: Ian Jackson <iwj@xxxxxxxxxxxxxx>
CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Julien Grall <julien@xxxxxxx>
CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
CC: Wei Liu <wl@xxxxxxx>
---
 automation/gitlab-ci/build.yaml | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/automation/gitlab-ci/build.yaml b/automation/gitlab-ci/build.yaml
index 1e61d30c85..4bd1cfc1c0 100644
--- a/automation/gitlab-ci/build.yaml
+++ b/automation/gitlab-ci/build.yaml
@@ -176,16 +176,6 @@ centos-7-gcc-debug:
   variables:
     CONTAINER: centos:7
 
-centos-6-gcc:
-  extends: .gcc-x86-64-build
-  variables:
-    CONTAINER: centos:6
-
-centos-6-gcc-debug:
-  extends: .gcc-x86-64-build-debug
-  variables:
-    CONTAINER: centos:6
-
 debian-jessie-clang:
   extends: .clang-x86-64-build
   variables:
-- 
2.21.0 (Apple Git-122)