fix(spylog): reduce usage of FW_DEPRECATED Macro

What does this MR do?

Small cleanup of usage of FW_DEPRECATED macros.

• Macros was removed from widely used functions
• keyword [[deprecated]] was added where it was missing

How to test it?

1. Compile
2. Check the compilation warnings
3. Check the log of you application, number of deprecated log should have drastically reduce

Data

No data required

Some results

Far less deprecated log in console/SLM.log

Associated Issues/Merge Requests

Closes #487 (closed)