refactor(ivy): simplify property binding metadata storage (#32457)

Since property binding metadata storage is guarded with the ngDevMode now
and several instructions were merged together, we can simplify the way we
store and read property binding metadata.

PR Close #32457

packages/core/src/render3/util/misc_utils.ts

@@ -82,14 +82,6 @@ export function ɵɵresolveBody(element: RElement & {ownerDocument: Document}) {
  */
 export const INTERPOLATION_DELIMITER = `<EFBFBD>`;
 
-/**
- * Determines whether or not the given string is a property metadata string.
- * See storeBindingMetadata().
- */
-export function isPropMetadataString(str: string): boolean {
-  return str.indexOf(INTERPOLATION_DELIMITER) >= 0;
-}
-
 /**
  * Unwrap a value which might be behind a closure (for forward declaration reasons).
  */