refactor(pricing): remove explanation section from pricing modal

tauri-app/src/components/PricingModal/PricingModal.tsx

@@ -21,12 +21,6 @@ const ClockIcon = () => (
   </svg>
 );
 
-const InfoIcon = () => (
-  <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
-    <circle cx="12" cy="12" r="10" /><line x1="12" y1="16" x2="12" y2="12" /><line x1="12" y1="8" x2="12.01" y2="8" />
-  </svg>
-);
-
 interface PricingModalProps {
   open: boolean;
   onClose: () => void;
@@ -119,17 +113,6 @@ export default function PricingModal({ open, onClose }: PricingModalProps) {
             </div>
           )}
 
-          {/* 说明 */}
-          <div className="profile-pricing-info-section">
-            <div className="profile-pricing-info-title">
-              <InfoIcon />
-              说明
-            </div>
-            <ul className="profile-pricing-info-list">
-              <li>固定计费：每次使用消耗固定积分，与输入内容长度无关。</li>
-              <li>按时长计费：根据实际生成内容的时长按单位消耗。</li>
-            </ul>
-          </div>
         </div>
       )}
     </Modal>