Remove accidental stamp #2948

Job	Run time
env-protect-setup	14s
authorize	2s
get-dev-image / get-image	7s
clang-tidy	46s
generate-matrix	2m 47s
code-coverage	0s
build-and-test (GCC opt, nokvm, --config=gcc --compilation_mode=opt, bazel_buildables_gcc_opt)	1m 48s
build-and-test (ASAN, nokvm, --config=asan --compilation_mode=dbg, bazel_buildables_sanitizer)	1m 55s
build-and-test (TSAN, nokvm, --config=tsan --compilation_mode=dbg, bazel_buildables_sanitizer)	1m 53s
build-and-test (Clang debug, nokvm, --config=clang --compilation_mode=dbg, bazel_buildables_clang...	1m 58s
build-and-test (Clang opt + UI, nokvm, --config=clang --compilation_mode=opt, bazel_buildables_cl...	2m 13s
build-and-test (Go race detector, nokvm, --config=go_race --compilation_mode=opt, bazel_buildable...	2m 51s
build-and-test-status	3s
	16m 37s

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