Cleanup old libs

[DelofJ]

I saw old libs that became unused with the latest commit
Is this intended ?

[DelofJ]

Btw, taking this occasion, I saw that the flag -Wno-error=deprecated-declarations was removed
This causes the build to fail on my machine

server/sha2.cpp:413:9: error: 'sprintf' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Werror,-Wdeprecated-declarations]
  413 |         sprintf(buf+i*2, "%02x", digest[i]);
      |         ^

And by seeing this comment from previous commits, it seems like you where aware of this issue

# macOS defines sprintf as unsafe, and refuses to compile further, so add this flag to ignore it

So why removing it, is this no longer a thing on more recent macOS versions ?
If that the case, then it's still an issue for us that are on older macOS versions