fix: more rabbit reviews

Author: turip

openmeter/billing/service/gatheringinvoicependinglines.go

@@ -197,10 +197,6 @@ func (in handleInvoicePendingLinesForCurrencyInput) Validate() error {
 		return fmt.Errorf("gathering invoice: %w", err)
 	}
 
-	if in.FeatureMeters == nil {
-		return fmt.Errorf("feature meters cannot be nil")
-	}
-
 	if len(in.InScopeLines) == 0 {
 		return fmt.Errorf("in scope lines must contain at least one line")
 	}
@@ -375,10 +371,6 @@ func (i prepareLinesToBillInput) Validate() error {
 		errs = append(errs, fmt.Errorf("no lines to bill"))
 	}
 
-	if i.FeatureMeters == nil {
-		errs = append(errs, fmt.Errorf("feature meters cannot be nil"))
-	}
-
 	if i.GatheringInvoice.Lines.IsAbsent() {
 		errs = append(errs, fmt.Errorf("gathering invoice must have lines expanded"))
 	}
@@ -630,10 +622,6 @@ func (in createStandardInvoiceFromGatheringLinesInput) Validate() error {
 		errs = append(errs, fmt.Errorf("effective billing profile: %w", err))
 	}
 
-	if in.FeatureMeters == nil {
-		errs = append(errs, fmt.Errorf("feature meters cannot be nil"))
-	}
-
 	if len(in.Lines) == 0 {
 		errs = append(errs, fmt.Errorf("lines must contain at least one line"))
 	}

openmeter/billing/service/invoice.go

@@ -159,10 +159,6 @@ func (s *Service) recalculateGatheringInvoice(ctx context.Context, in recalculat
 		return invoice, fmt.Errorf("resolving feature meters: %w", err)
 	}
 
-	if customerProfile.Customer == nil {
-		return invoice, fmt.Errorf("customer profile is nil")
-	}
-
 	inScopeLines := lo.Filter(invoice.Lines.OrEmpty(), func(line *billing.StandardLine, _ int) bool {
 		return line.DeletedAt == nil
 	})