chore: drop Option.fromNullable

Author: hamzaremmal

library/src/scala/Predef.scala

@@ -594,10 +594,6 @@ object Predef extends LowPriorityImplicits {
     inline infix def ne(inline y: AnyRef | Null): Boolean =
       !(x eq y)
 
-  extension (opt: Option.type)
-    @experimental
-    inline def fromNullable[T](t: T | Null): Option[T] = Option(t).asInstanceOf[Option[T]]
-
   /** A type supporting Self-based type classes.
    *
    *    A is TC

library/src/scala/runtime/stdLibPatches/Predef.scala

@@ -66,10 +66,6 @@ object Predef:
     inline infix def ne(inline y: AnyRef | Null): Boolean =
       !(x eq y)
 
-  extension (opt: Option.type)
-    @experimental
-    inline def fromNullable[T](t: T | Null): Option[T] = Option(t).asInstanceOf[Option[T]]
-
   /** A type supporting Self-based type classes.
    *
    *    A is TC

tests/explicit-nulls/neg/from-nullable.scala

@@ -5,8 +5,8 @@ object Test:
     val s1: String | Null = "hello"
     val s2: String | Null = null
 
-    val opts1: Option[String] = Option.fromNullable(s1)
-    val opts2: Option[String] = Option.fromNullable(s2)
+    val opts1: Option[String] = Option(s1)
+    val opts2: Option[String] = Option(s2)
 
     opts1 match
       case Some(s) => println(s)

tests/explicit-nulls/run/from-nullable.scala

@@ -79,9 +79,6 @@ val experimentalDefinitionInLibrary = Set(
   "scala.quoted.Quotes.reflectModule.RenameSelectorModule.apply",
   "scala.quoted.Quotes.reflectModule.SimpleSelectorModule.apply",
 
-  // New feature: fromNullable for explicit nulls
-  "scala.Predef$.fromNullable",
-
   // New feature: modularity
   "scala.Precise",
   "scala.annotation.internal.WitnessNames",