gitlab-ci: Remove unused 'git' package

Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>

.gitlab-ci.yml

@@ -10,7 +10,7 @@ style:
   stage: style
   before_script:
     - apt-get update -qq
-    - apt-get install -qq -y astyle git
+    - apt-get install -qq -y astyle
   script:
     - if (test $(astyle --dry-run --options=.astylerc --formatted lib/*.cc | wc -l) -eq 0); then (exit 0); else (exit 1); fi
     - if (test $(astyle --dry-run --options=.astylerc --formatted lib/*.h | wc -l) -eq 0); then (exit 0); else (exit 1); fi