fix: remove incorrect tooltip on remaining credit balance (#7383)

## Summary
Removed incorrect tooltip displayed on the remaining credit balance in
the subscription panel.

## Changes
- **What**: Removed unused `refreshTooltip` destructure and i18n
translation key
- **Breaking**: None

Fixes #6694

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7383-fix-remove-incorrect-tooltip-on-remaining-credit-balance-2c66d73d3650814eaee0f3c9006b7bd6)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/platform/cloud/subscription/components/SubscriptionPanel.vue

@@ -138,19 +138,6 @@
                         >
                           {{ $t('subscription.creditsRemainingThisMonth') }}
                         </div>
-                        <Button
-                          v-tooltip="refreshTooltip"
-                          icon="pi pi-question-circle"
-                          text
-                          rounded
-                          size="small"
-                          class="h-4 w-4 shrink-0"
-                          :pt="{
-                            icon: {
-                              class: 'text-text-secondary text-xs'
-                            }
-                          }"
-                        />
                       </div>
                     </div>
                     <div class="flex items-center gap-4">
@@ -440,7 +427,6 @@ const { totalCredits, monthlyBonusCredits, prepaidCredits, isLoadingBalance } =
 
 const {
   isLoadingSupport,
-  refreshTooltip,
   handleAddApiCredits,
   handleMessageSupport,
   handleRefresh,

src/platform/cloud/subscription/composables/useSubscriptionActions.ts

@@ -1,5 +1,4 @@
-import { computed, onMounted, ref } from 'vue'
-import { useI18n } from 'vue-i18n'
+import { onMounted, ref } from 'vue'
 
 import { useFirebaseAuthActions } from '@/composables/auth/useFirebaseAuthActions'
 import { useSubscription } from '@/platform/cloud/subscription/composables/useSubscription'
@@ -8,30 +7,18 @@ import { useTelemetry } from '@/platform/telemetry'
 import { useDialogService } from '@/services/dialogService'
 import { useCommandStore } from '@/stores/commandStore'
 
-const MONTHLY_CREDIT_BONUS_USD = 10
-
 /**
  * Composable for handling subscription panel actions and loading states
  */
 export function useSubscriptionActions() {
-  const { t } = useI18n()
   const dialogService = useDialogService()
   const authActions = useFirebaseAuthActions()
   const commandStore = useCommandStore()
   const telemetry = useTelemetry()
-  const { fetchStatus, formattedRenewalDate } = useSubscription()
+  const { fetchStatus } = useSubscription()
 
   const isLoadingSupport = ref(false)
 
-  const refreshTooltip = computed(() => {
-    const date =
-      formattedRenewalDate.value || t('subscription.nextBillingCycle')
-    return t('subscription.refreshesOn', {
-      monthlyCreditBonusUsd: MONTHLY_CREDIT_BONUS_USD,
-      date
-    })
-  })
-
   onMounted(() => {
     void handleRefresh()
   })
@@ -72,7 +59,6 @@ export function useSubscriptionActions() {
 
   return {
     isLoadingSupport,
-    refreshTooltip,
     handleAddApiCredits,
     handleMessageSupport,
     handleRefresh,