edit account and logout feature

src/components/Header.vue

@@ -6,10 +6,6 @@
       </figure>
       <div class="flex justify-between items-center relative"
         v-show="showMember">
-        <!-- TODO: 換成人頭按鈕 帳號管理功能 -->
-        <button id="logout_btn" class="btn btn-sm btn-neutral mr-2" @click.prevent="logOutButton">
-          Logout
-        </button>
         <img id="acct_mgmt_button" src="@/assets/icon-head-black.svg" width="32" height="32" 
           class="cursor-pointer"  @click="onAcctHeadClick"
         />