Revert "feat(autocomplete): in trip planner, auto-select first result…

… on enter (#2363)"

This reverts commit d95d7c3.

assets/ts/ui/autocomplete/config.ts

@@ -210,15 +210,6 @@ const TRIP_PLANNER = ({
     onReset: (): void => {
       pushToLiveView({});
     },
-    onSubmit({ state, setQuery }) {
-      // Triggered by pressing enter on the input: selects the first result.
-      const results = state.collections.flatMap(collection => collection.items);
-      if (results.length > 0) {
-        const item = results[0];
-        // @ts-ignore
-        onSelect({ item, setQuery });
-      }
-    },
     getSources({ query }) {
       if (!query)
         return debounced([