tests

Remove unused RangeMap #81

Job	Run time
test_cygwin (39, windows-latest)	4m 24s
test (3.8, ubuntu-latest)	45s
ci_setuptools (3.10, ubuntu-latest)	3m 43s
collateral (diffcov)	1m 4s
test (3.8, macos-latest)	1m 12s
test_msvc_python_mingw	2m 15s
collateral (docs)	31s
test_msys2_mingw (mingw64, x86_64, gcc, g++)	2m 12s
test (3.8, windows-latest)	1m 52s
test_msys2_mingw (mingw32, i686, gcc, g++)	2m 35s
test (3.12, ubuntu-latest)	42s
test_msys2_mingw (ucrt64, ucrt-x86_64, gcc, g++)	2m 13s
test (3.12, macos-latest)	58s
test_msys2_mingw (clang64, clang-x86_64, clang, clang++)	2m 23s
test (3.12, windows-latest)	2m 38s
test (3.9, ubuntu-latest)	41s
test (3.10, ubuntu-latest)	44s
test (3.11, ubuntu-latest)	40s
test (pypy3.10, ubuntu-latest)	1m 33s
check	2s
release	0s
	33m 7s

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