feat(VTimePicker): remove ampmInTitle prop

[KaelWD]

Description

closes #19637
closes #19957
reverts #20178, there's no other am/pm button, so without setting ampmInTitle or format="24hour" you can't use pm times at all.

Markup:

<template>
  <v-app>
    <v-container>
      <v-time-picker v-model="time" />

      <pre>{{ time }}</pre>
    </v-container>
  </v-app>
</template>

<script setup>
  import { computed, ref, watch } from 'vue'

  const time = ref()
</script>