docs: update sponsors

Author: kazupon

README.md

@@ -22,15 +22,6 @@ Vue I18n is part of the Vue Ecosystem and Intlify Project is an open source proj
   </a>
 </p>
 
-<p align="center">
-  <a href="https://www.microsoft.com/" target="_blank">
-    <img
-      src="https://raw.githubusercontent.com/intlify/vue-i18n/master/docs/public/microsoft.webp"
-      width="400px"
-    />
-  </a>
-</p>
-
 <h3 align="center">✨ Special Sponsors</h3>
 
 <p align="center">
@@ -81,15 +72,6 @@ Vue I18n is part of the Vue Ecosystem and Intlify Project is an open source proj
 
 <h3 align="center">🥉 Bronze Sponsors</h3>
 
-<p align="center">
-  <a href="https://www.vuemastery.com/" target="_blank">
-    <img
-      src="https://raw.githubusercontent.com/intlify/vue-i18n/master/docs/public/vuemastery.png"
-      width="144px"
-    />
-  </a>
-</p>
-
 <p align="center">
   <a href="https://froggly.pl/" target="_blank">
     <img

docs/.vitepress/theme/sponsors.json

@@ -3,10 +3,6 @@
     "name": "Zen Architects",
     "url": "https://zenarchitects.co.jp/",
     "img": "zenarchitects.png"
-  }, {
-    "name": "Microsoft",
-    "url": "https://www.microsoft.com/",
-    "img": "microsoft.webp"
   }],
   "special": [{
     "name": "PLAID",
@@ -28,10 +24,6 @@
   }],
   "silver": [],
   "bronze": [{
-    "name": "Vue Mastery",
-    "url": "https://www.vuemastery.com/",
-    "img": "vuemastery.png"
-  }, {
     "name": "Froggly",
     "url": "https://froggly.pl/",
     "img": "Froggly.svg"