Remove unused connection utility functions

Author: milanofthe

src/lib/components/canvas/connectionUtils.ts

@@ -1,11 +1,9 @@
 /**
- * Connection validation and utilities for SvelteFlow canvas
+ * Connection utilities for SvelteFlow canvas
  */
 
 import { get } from 'svelte/store';
 import { graphStore } from '$lib/stores/graph';
-import { nodeRegistry } from '$lib/nodes';
-import { HANDLE_ID } from '$lib/constants/handles';
 
 /**
  * Find the first available (unconnected) input port for a node
@@ -30,65 +28,3 @@ export function findFirstAvailableInputPort(nodeId: string): number | null {
 
 	return null;
 }
-
-/**
- * Check if a target port is already connected
- */
-export function isPortOccupied(nodeId: string, portIndex: number): boolean {
-	const currentConnections = get(graphStore.connections);
-	return currentConnections.some(
-		(c) => c.targetNodeId === nodeId && c.targetPortIndex === portIndex
-	);
-}
-
-/**
- * Check if a node can accept more input ports
- */
-export function canAddInputPort(nodeId: string): boolean {
-	const graphNodes = get(graphStore.nodesArray);
-	const node = graphNodes.find((n) => n.id === nodeId);
-	if (!node) return false;
-
-	const typeDef = nodeRegistry.get(node.type);
-	if (!typeDef) return false;
-
-	// Check if maxInputs allows more ports
-	return typeDef.ports.maxInputs === null || node.inputs.length < typeDef.ports.maxInputs;
-}
-
-/**
- * Find a connection by edge properties (source, target, handles)
- */
-export function findConnectionByEdge(
-	source: string,
-	target: string,
-	sourceHandle: string | null,
-	targetHandle: string | null
-): { id: string; sourcePortIndex: number; targetPortIndex: number } | null {
-	const currentConnections = get(graphStore.connections);
-
-	// Try to parse port indices from handles
-	if (sourceHandle && targetHandle) {
-		const { sourceIndex, targetIndex } = HANDLE_ID.parseConnection(sourceHandle, targetHandle);
-
-		if (sourceIndex !== null && targetIndex !== null) {
-			const conn = currentConnections.find(
-				(c) =>
-					c.sourceNodeId === source &&
-					c.sourcePortIndex === sourceIndex &&
-					c.targetNodeId === target &&
-					c.targetPortIndex === targetIndex
-			);
-
-			if (conn) {
-				return {
-					id: conn.id,
-					sourcePortIndex: sourceIndex,
-					targetPortIndex: targetIndex
-				};
-			}
-		}
-	}
-
-	return null;
-}