refactor(parser): remove parsePatternProperties function and related logic

Author: carson2222

packages/openapi-ts/src/openApi/3.1.x/parser/schema.ts

@@ -801,16 +801,6 @@ const parseOneOf = ({
   return irSchema;
 };
 
-const parsePatternProperties = ({
-  context,
-  schema,
-  state,
-}: {
-  context: IR.Context;
-  schema: SchemaWithRequired<SchemaObject, 'patternProperties'>;
-  state: SchemaState;
-}): IR.SchemaObject => parseObject({ context, schema, state });
-
 const parseRef = ({
   context,
   schema,
@@ -1094,14 +1084,6 @@ export const schemaToIrSchema = ({
     });
   }
 
-  if (schema.patternProperties) {
-    return parsePatternProperties({
-      context,
-      schema: schema as SchemaWithRequired<SchemaObject, 'patternProperties'>,
-      state,
-    });
-  }
-
   // infer object based on the presence of properties
   if (schema.type || schema.properties) {
     return parseType({