ci/softpipe: Skip flaky triangle-rasterization-overdraw.

It runs a different test each run based on current time, and fails
occasionally.  Until the test can get fixed, remove it.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8275>

.gitlab-ci.yml

@@ -1240,9 +1240,11 @@ softpipe-piglit-quick:
   variables:
     GALLIUM_DRIVER: softpipe
     # rasterpos skipped due to flakes from use-after-free of the draw vs.
+    # triangle-rasterization skipped due to flakes thanks to it using a time-based random seed.
     PIGLIT_OPTIONS: >
       --process-isolation false
       -x rasterpos
+      -x triangle-rasterization
       -x egl_ext_device_
       -x egl_ext_platform_device
       -x ext_timer_query@time-elapsed

.gitlab-ci/piglit/softpipe-quick.txt

@@ -263,7 +263,6 @@ spec/!opengl 1.4/copy-pixels samples=6: skip
 spec/!opengl 1.4/copy-pixels samples=8: skip
 spec/!opengl 1.4/gl-1.4-polygon-offset: fail
 spec/!opengl 1.4/gl-1.4-rgba-mipmap-texture-with-rgb-visual: skip
-spec/!opengl 1.4/triangle-rasterization-overdraw: fail
 spec/!opengl 2.0/vertex-program-two-side back back2/tcs-out, tes and fs: skip
 spec/!opengl 2.0/vertex-program-two-side back back2/tes-out and fs: skip
 spec/!opengl 2.0/vertex-program-two-side back back2/vs, tcs, tes and fs: skip
@@ -3084,8 +3083,8 @@ wgl/wgl-sanity: skip
 summary:
        name:  results
        ----  --------
-       pass:    26804
-       fail:      400
+       pass:    26802
+       fail:      399
       crash:       42
        skip:     2612
     timeout:        0
@@ -3096,4 +3095,4 @@ summary:
     changes:        0
       fixes:        0
 regressions:        0
-      total:    29887
+      total:    29884