Revert "Add support for importing TPM2 keys with PKCS11 vendor attrib… #457

Job	Run time
coverage-test	7m 19s
fuzzing-test	4m 34s
generic-build-test (ubuntu-18.04, gcc)	7m 18s
coverity-test	0s
generic-build-test (ubuntu-18.04, clang)	6m 26s
generic-build-test (ubuntu-20.04, gcc)	6m 49s
generic-build-test (ubuntu-20.04, clang)	5m 46s
generic-build-test (fedora-30, gcc)	7m 11s
generic-build-test (fedora-30, clang)	6m 46s
generic-build-test (opensuse-leap, gcc)	7m 7s
generic-build-test (opensuse-leap, clang)	6m 10s
generic-build-test (ubuntu-22.04, gcc)	46m 36s
	1h 52m 2s

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