Revert "Add support for importing TPM2 keys with PKCS11 vendor attrib… #458

Job	Run time
coverage-test	7m 6s
fuzzing-test	4m 41s
coverity-test	0s
generic-build-test (ubuntu-18.04, gcc)	7m 24s
generic-build-test (ubuntu-18.04, clang)	6m 38s
generic-build-test (ubuntu-20.04, gcc)	7m 38s
generic-build-test (ubuntu-20.04, clang)	6m 23s
generic-build-test (fedora-30, gcc)	7m 10s
generic-build-test (fedora-30, clang)	6m 28s
generic-build-test (opensuse-leap, gcc)	6m 57s
generic-build-test (opensuse-leap, clang)	6m 17s
generic-build-test (ubuntu-22.04, gcc)	44m 33s
	1h 51m 15s

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