Remove deprecation warning

Author: devjiwonchoi

packages/next/src/server/config.ts

@@ -109,19 +109,6 @@ function checkDeprecations(
   silent: boolean,
   dir: string
 ) {
-  warnOptionHasBeenDeprecated(
-    userConfig,
-    'publicRuntimeConfig',
-    `Runtime config is deprecated and the \`publicRuntimeConfig\` configuration option will be removed in Next.js 16.`,
-    silent
-  )
-  warnOptionHasBeenDeprecated(
-    userConfig,
-    'serverRuntimeConfig',
-    `Runtime config is deprecated and the \`serverRuntimeConfig\` configuration option will be removed in Next.js 16.`,
-    silent
-  )
-
   if (userConfig.experimental?.dynamicIO !== undefined) {
     warnOptionHasBeenDeprecated(
       userConfig,