Remove dirty check from LRU cleaner getter callback

This check is incorrect as cacheline status may change
from dirty to clean at any point during cleaning, except for
when the hash bucket is locked.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>

src/eviction/lru.c

@@ -525,7 +525,6 @@ static int evp_lru_clean_get(ocf_cache_t cache, void *getter_context,
 	if (ctx->cline[idx] == end_marker)
 		return -1;
 
-	ENV_BUG_ON(!metadata_test_dirty(ctx->cache, ctx->cline[idx]));
 	*line = ctx->cline[idx];
 
 	return 0;