Remove static analysis assertions

None of them are currently needed to pass our upstream CI, most were
either for ancient clang versions or coverity for silencing false
positives.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

tests/commandtest.c

@@ -611,7 +611,6 @@ static int test17(const void *unused G_GNUC_UNUSED)
         goto cleanup;
     }
 
-    sa_assert(outbuf);
     if (*outbuf) {
         puts("output buffer is not an allocated empty string");
         goto cleanup;