all: Remove unused method receivers (#8462)

Co-authored-by: deepsource-autofix[bot] <62050782+deepsource-autofix[bot]@users.noreply.github.com>

lib/connections/limiter.go

@@ -173,7 +173,7 @@ func (lim *limiter) CommitConfiguration(from, to config.Configuration) bool {
 	return true
 }
 
-func (lim *limiter) String() string {
+func (*limiter) String() string {
 	// required by config.Committer interface
 	return "connections.limiter"
 }

lib/connections/service.go

@@ -492,7 +492,7 @@ func (s *service) connect(ctx context.Context) error {
 	}
 }
 
-func (s *service) bestDialerPriority(cfg config.Configuration) int {
+func (*service) bestDialerPriority(cfg config.Configuration) int {
 	bestDialerPriority := worstDialerPriority
 	for _, df := range dialers {
 		if df.Valid(cfg) != nil {