Fix cache token accounting and tiered pricing

frontend/src/features/providers/components/ProviderModelFormDialog.vue

@@ -167,7 +167,6 @@
         <TieredPricingEditor
           ref="tieredPricingEditorRef"
           v-model="tieredPricing"
-          :show-cache1h="showCache1h"
           :show-image-pricing="isImageGenerationEnabled"
         />
 
@@ -380,9 +379,6 @@ const isImageGenerationEnabled = computed(() => {
   return supportsImageGeneration || tieredPricingHasImageOutputPricing(tieredPricing.value)
 })
 
-// 1h 缓存定价始终显示
-const showCache1h = true
-
 // 表单状态
 const submitting = ref(false)
 const loadingGlobalModels = ref(false)