Is it safe to remove SAL annotations from Code?

I am porting some code from Visual Studio to Mingw gcc. I noticed that in that code a lot of annotations such as

__field_ecount_opt
AM_NOVTABLE
_out_bcount_part_opt(x,y)

are being used. I came across this thread which talks about SAL annotations.

My question is if I remove the some SAL Annotations from my code. Will it have any negative effects ? Will the code still be functional ?