[#1598] golangci: Enable unparam linter

To drop unnecessary parameters and return values.

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/local_object_storage/writecache/state.go

@@ -19,7 +19,6 @@ func (c *cache) hasEnoughSpace(objectSize uint64) bool {
 	return c.maxCacheSize >= size+objectSize
 }
 
-func (c *cache) initCounters() error {
+func (c *cache) initCounters() {
 	c.estimateCacheSize()
-	return nil
 }