Remove Arm SME kernel from gemm test yaml. #3140

Job	Run time
build-and-test / cmake-linux-riscv64	2m 47s
build-and-test / cmake-linux-aarch64	1m 43s
build-and-test / cmake-linux-riscv64-rvv	3m 13s
build-and-test / cmake-linux-armhf	3m 54s
build-and-test / cmake-linux-x86_64	1m 53s
build-and-test / cmake-windows-arm64	2m 19s
build-and-test / cmake-windows-x64	3m 48s
build-and-test / cmake-windows-x86	3m 11s
build-and-test / bazel-linux-aarch64	3m 38s
build-and-test / bazel-linux-x86_64-clang-18	3m 9s
build-and-test / bazel-linux-x86_64-gcc-9	3m 1s
build-and-test / cmake-android (arm64)	1m 48s
build-and-test / cmake-ios-arm64	3m 38s
build-and-test / cmake-android (armv7)	1m 47s
build-and-test / cmake-ios-x86_64	4m 31s
build-and-test / cmake-macos-arm64	1m 46s
build-and-test / cmake-android (x86)	1m 56s
	48m 2s

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