`BASIC_CONSTRAINTS_STRING_FALSE_CASE2` should (probably) not exist

[steven-bellock]

From https://github.com/DMTF/SPDM-WG/issues/4416.

In a DER-encoded certificate chain, if a sequence element is equal to its default value then it is not present in the final encoding. However, BASIC_CONSTRAINTS_STRING_FALSE_CASE2 violates this when checking the leaf certificate.

libspdm/library/spdm_crypt_lib/libspdm_crypt_cert.c

Lines 162 to 163 in e9cc874

	/*leaf cert basic_constraints false case2: CA: false */
	#define BASIC_CONSTRAINTS_STRING_FALSE_CASE2 {0x30, 0x03, 0x01, 0x01, 0x00}

Will wait first for resolution of https://github.com/DMTF/SPDM-WG/issues/4416 before fixing this, since it is still an open issue.