chore: drop unused DEV dependency

Author: nikku

package-lock.json

@@ -60,7 +60,6 @@
     "@babel/core": "^7.25.2",
     "@babel/plugin-transform-react-jsx": "^7.25.2",
     "@bpmn-io/element-template-chooser": "^1.0.0",
-    "@bpmn-io/element-templates-icons-renderer": "^0.3.0",
     "@bpmn-io/properties-panel": "^3.24.1",
     "@bpmn-io/variable-resolver": "^1.3.0",
     "@rollup/plugin-alias": "^5.1.0",