Remove remaining uses of removed swcMinify config option (#68389)

Author: eps1lon

crates/next-build-test/nextConfig.json

@@ -63,7 +63,6 @@
   },
   "outputFileTracing": true,
   "staticPageGenerationTimeout": 60,
-  "swcMinify": true,
   "modularizeImports": {},
   "experimental": {
     "prerenderEarlyExit": false,