refactor: remove duplicate contact button in about page

zhiyin-app/src/pages/about/about.vue

@@ -17,18 +17,6 @@
       <text class="info-value">contact@yuzhiran.com</text>
     </view>
 
-    <!-- #ifdef MP-WEIXIN -->
-    <view class="link-section contact-link-section">
-      <view class="link-item">
-        <button class="contact-btn-inline" open-type="contact">
-          <text class="contact-btn-icon">💬</text>
-          <text class="link-text">联系客服</text>
-          <text class="link-arrow">›</text>
-        </button>
-      </view>
-    </view>
-    <!-- #endif -->
-
     <view class="link-section">
       <view class="link-item" @click="goAgreement">
         <text class="link-text">用户协议</text>
@@ -73,8 +61,5 @@ const goPrivacy = () => uni.navigateTo({ url: '/pages/privacy/privacy' })
 .disclaimer-title { font-size: 24rpx; font-weight: 700; color: #F59E0B; display: block; margin-bottom: 12rpx; }
 .disclaimer-text { font-size: 22rpx; color: var(--color-text-secondary); line-height: 1.8; }
 
-.contact-link-section { margin-top: 12rpx; }
-.contact-btn-inline { width: 100%; background: transparent; border: none; border-radius: 0; padding: 0; margin: 0; line-height: inherit; font-size: inherit; text-align: left; display: flex; align-items: center; min-height: auto; }
-.contact-btn-inline::after { border: none; }
-.contact-btn-icon { font-size: 28rpx; margin-right: 16rpx; }
+
 </style>