Removed unnecessary min and max calls for rdsum avx512. #1229

Job	Run time
build-and-test / bazel-linux-x86_64	14m 7s
build-and-test / cmake-android (build-android-arm64.sh)	10m 52s
build-and-test / bazel-linux-x86_64-gcc-9	8m 10s
build-and-test / cmake-android (build-android-armv7.sh)	10m 21s
build-and-test / bazel-linux-aarch64	9m 49s
build-and-test / cmake-android (build-android-x86.sh)	11m 51s
build-and-test / cmake-ios-arm64	5m 24s
build-and-test / cmake-ios-x86_64	7m 1s
build-and-test / cmake-linux-aarch64	9m 55s
build-and-test / cmake-linux-armhf	12m 2s
build-and-test / cmake-linux-local	14m 29s
build-and-test / cmake-linux-riscv64	8m 0s
build-and-test / cmake-linux-riscv64-rvv	11m 16s
build-and-test / cmake-macos-arm64	9m 41s
build-and-test / cmake-windows-arm64	6m 31s
build-and-test / cmake-windows-x64	10m 15s
build-and-test / cmake-windows-x86	10m 25s
	2h 50m 9s

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