[CQ] Remove mips builders from CQ

NOTRY=true

Bug: chromium:872230
Change-Id: I15534f533e43cd4bdeedcdac204776178886c48d
Reviewed-on: https://chromium-review.googlesource.com/1166916Reviewed-by: Michael Hablich <hablich@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54989}

infra/config/cq.cfg

@@ -68,8 +68,6 @@ verifiers {
       }
       builders { name: "v8_linux_chromium_gn_rel" }
       builders { name: "v8_linux_gcc_compile_rel" }
-      builders { name: "v8_linux_mips64el_compile_rel" }
-      builders { name: "v8_linux_mipsel_compile_rel" }
       builders { name: "v8_linux_nodcheck_rel_ng" }
       builders {
         name: "v8_linux_nodcheck_rel_ng_triggered"