Update experimental definitions list

Author: mpilquist

tests/run-custom-args/tasty-inspector/stdlibExperimentalDefinitions.scala

@@ -58,10 +58,6 @@ val experimentalDefinitionInLibrary = Set(
   //// New feature: into
   "scala.annotation.allowConversions",
 
-  //// New APIs: Mirror
-  // Can be stabilized in 3.3.0 or later.
-  "scala.deriving.Mirror$.fromProductTyped", // This API is a bit convoluted. We may need some more feedback before we can stabilize it.
-
   //// New feature: Macro annotations
   "scala.annotation.MacroAnnotation",