Removed global average pooling from average-pooling-nhwc. #3159

Job	Run time
build-and-test / cmake-linux-riscv64	2m 43s
build-and-test / cmake-linux-armhf	2m 10s
build-and-test / cmake-linux-aarch64	2m 40s
build-and-test / cmake-linux-riscv64-rvv	8m 20s
build-and-test / cmake-linux-x86_64	1m 18s
build-and-test / cmake-windows-arm64	2m 33s
build-and-test / bazel-linux-aarch64	4m 6s
build-and-test / bazel-linux-x86_64-clang-18	4m 55s
build-and-test / bazel-linux-x86_64-gcc-9	3m 31s
build-and-test / cmake-android (arm64)	1m 55s
build-and-test / cmake-ios-arm64	5m 44s
build-and-test / cmake-ios-x86_64	8m 21s
build-and-test / cmake-android (armv7)	2m 38s
build-and-test / cmake-macos-arm64	1m 28s
build-and-test / cmake-android (x86)	1m 52s
build-and-test / cmake-windows-x86	4m 46s
build-and-test / cmake-windows-x64	3m 30s
	1h 2m 30s

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