Remove Python 2 bindings #138

Job	Run time
macos-latest\|Debug\|CC=gcc CXX=g++	2m 9s
ubuntu-latest\|Release\|CC=clang CXX=clang++	2m 6s
macos-latest\|Release\|CC=clang CXX=clang++	2m 0s
ubuntu-latest\|Release\|CC=gcc CXX=g++	2m 6s
ubuntu-latest\|Debug\|CC=gcc CXX=g++	1m 58s
macos-latest\|Debug\|CC=clang CXX=clang++	1m 45s
macos-latest\|Release\|CC=gcc CXX=g++	1m 33s
ubuntu-latest\|Debug\|CC=clang CXX=clang++	2m 1s
	15m 38s

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