Remove deprecated symbols from master branch

[jan-cerny]

Description of Problem:

OpenSCAP API contains a very large amount of deprecated symbols.
If we remove them before we release 1.3.0-alpha1, we will be able to detect soon if the removal causes any problem.

This could be very useful in modern Linux distributions if they will contain 1.3.0-alpha1. They will be able to detect possible problems with integration of other components that depend on OpenSCAP API.

OpenSCAP Version:

current upstream master HEAD

Operating System & Version:

every

Steps to Reproduce:

1. open the header files

Actual Results:

OpenSCAP API contains deprecated symbols

Expected Results:

OpenSCAP API doesn't contain deprecated symbols

Additional Information / Debugging Steps:

nothing

[jan-cerny]

Fixed in #1090