remove several unused files
remove mem_block_t that is never used in a different way than a simple heap buffer
move up IP address type and remove duplications of the same struct declaration
As described in common/utils/config.h, it is possible to hook into the
asn1c tracing mechanism to print logs.
This commit fixes a regression to print theses traces properly in OAI.
Above-mentioned file explains also how to reduce the amount of logs,
e.g., for single code blocks.
There is a conflict with some E2AP definitions that put ASN as a
preprocessor definition. To avoid this conflict, and since ASN1 is more
descriptive than ASN, we change the logging mechanism name from ASN to
ASN1.