regres: fix wsi test list
regres: fix wsi test list

Previously we had generated this via deqp-vk --deqp-runmode=stdout-caselist
+ a sed one-liner to strip off the prefix. Unfortunately, that's not quite
good enough -- that output contains a `GROUP: ` line for every non-leaf in
the the test tree. deqp would then produce log spam when failing to find
those nonexistent tests.

New test list generated by also filtering those `GROUP: ` lines.

Change-Id: If3c97724988f94e2e127e9e091960e1f51e3599a
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/26068
Tested-by: Chris Forbes <c3279c50043e18e9442c1ae071cafa0e7a4ca967@google.com>
Kokoro-Presubmit: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@google.com>

bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,google/swiftshader