Revert "fftw_lock: share lock and init between float/double" #12

Job	Run time
prepare	3s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=native)	1m 14s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=x86-64)	1m 17s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=native)	52s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=x86-64)	52s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=native)	1m 7s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=x86-64)	1m 14s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=native)	55s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=x86-64)	58s
Build with Pip (windows-2022, 3.8, msvc, /arch:AVX2)	11m 52s
Build with Pip (windows-2022, 3.8, msvc, /arch:SSE2)	12m 9s
Build with Pip (windows-2022, 3.8, llvm, /arch:AVX2)	4m 26s
Build with Pip (windows-2022, 3.8, llvm, /arch:SSE2)	5m 3s
Build with Pip (windows-2022, 3.11, msvc, /arch:AVX2)	13m 14s
Build with Pip (windows-2022, 3.11, msvc, /arch:SSE2)	12m 9s
Build with Pip (windows-2022, 3.11, llvm, /arch:AVX2)	3m 48s
Build with Pip (windows-2022, 3.11, llvm, /arch:SSE2)	4m 37s
Build with Pip (macos-13, 3.8, llvm, -march=native)	2m 31s
Build with Pip (macos-13, 3.8, llvm, -march=x86-64)	3m 38s
Build with Pip (macos-13, 3.8, gcc-14, -march=native)	1m 33s
Build with Pip (macos-13, 3.8, gcc-14, -march=x86-64)	2m 25s
Build with Pip (macos-13, 3.11, llvm, -march=native)	4m 20s
Build with Pip (macos-13, 3.11, llvm, -march=x86-64)	3m 23s
Build with Pip (macos-13, 3.11, gcc-14, -march=native)	1m 47s
Build with Pip (macos-13, 3.11, gcc-14, -march=x86-64)	2m 3s
	1h 37m 30s

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