Remove API may change for flow with context

Refs #26897

akka-stream/src/main/scala/akka/stream/javadsl/Flow.scala

@@ -20,7 +20,6 @@ import akka.util.JavaDurationConverters._
 import akka.actor.ActorRef
 import akka.dispatch.ExecutionContexts
 import akka.stream.impl.fusing.LazyFlow
-import akka.annotation.ApiMayChange
 import akka.util.unused
 import com.github.ghik.silencer.silent
 
@@ -3411,9 +3410,7 @@ final class Flow[In, Out, Mat](delegate: scaladsl.Flow[In, Out, Mat]) extends Gr
    * @param collapseContext turn each incoming pair of element and context value into an element of this Flow
    * @param extractContext turn each outgoing element of this Flow into an outgoing context value
    *
-   * API MAY CHANGE
    */
-  @ApiMayChange
   def asFlowWithContext[U, CtxU, CtxOut](
       collapseContext: function.Function2[U, CtxU, In],
       extractContext: function.Function[Out, CtxOut]): FlowWithContext[U, CtxU, Out, CtxOut, Mat] =

akka-stream/src/main/scala/akka/stream/javadsl/FlowWithContext.scala

@@ -4,7 +4,6 @@
 
 package akka.stream.javadsl
 
-import akka.annotation.ApiMayChange
 import akka.japi.{ function, Pair, Util }
 import akka.stream._
 import akka.event.LoggingAdapter
@@ -16,10 +15,6 @@ import java.util.concurrent.CompletionStage
 
 import scala.compat.java8.FutureConverters._
 
-/**
- * API MAY CHANGE
- */
-@ApiMayChange
 object FlowWithContext {
 
   def create[In, Ctx](): FlowWithContext[In, Ctx, In, Ctx, akka.NotUsed] =
@@ -42,9 +37,7 @@ object FlowWithContext {
  *
  * An "empty" flow can be created by calling `FlowWithContext[Ctx, T]`.
  *
- * API MAY CHANGE
  */
-@ApiMayChange
 final class FlowWithContext[In, CtxIn, Out, CtxOut, +Mat](
     delegate: javadsl.Flow[Pair[In, CtxIn], Pair[Out, CtxOut], Mat])
     extends GraphDelegate(delegate) {

akka-stream/src/main/scala/akka/stream/javadsl/Source.scala

@@ -8,7 +8,6 @@ import java.util
 import java.util.Optional
 
 import akka.actor.{ ActorRef, Cancellable, Props }
-import akka.annotation.ApiMayChange
 import akka.event.LoggingAdapter
 import akka.japi.{ function, Pair, Util }
 import akka.stream._
@@ -3597,10 +3596,6 @@ final class Source[Out, Mat](delegate: scaladsl.Source[Out, Mat]) extends Graph[
   def log(name: String): javadsl.Source[Out, Mat] =
     this.log(name, ConstantFun.javaIdentityFunction[Out], null)
 
-  /**
-   * API MAY CHANGE
-   */
-  @ApiMayChange
   def asSourceWithContext[Ctx](extractContext: function.Function[Out, Ctx]): SourceWithContext[Out, Ctx, Mat] =
     new scaladsl.SourceWithContext(this.asScala.map(x => (x, extractContext.apply(x)))).asJava
 }

akka-stream/src/main/scala/akka/stream/scaladsl/FlowWithContext.scala

@@ -7,14 +7,9 @@ package akka.stream.scaladsl
 import akka.NotUsed
 
 import scala.annotation.unchecked.uncheckedVariance
-import akka.annotation.ApiMayChange
 import akka.japi.Pair
 import akka.stream._
 
-/**
- * API MAY CHANGE
- */
-@ApiMayChange
 object FlowWithContext {
 
   /**
@@ -41,9 +36,7 @@ object FlowWithContext {
  *
  * An "empty" flow can be created by calling `FlowWithContext[Ctx, T]`.
  *
- * API MAY CHANGE
  */
-@ApiMayChange
 final class FlowWithContext[-In, -CtxIn, +Out, +CtxOut, +Mat](delegate: Flow[(In, CtxIn), (Out, CtxOut), Mat])
     extends GraphDelegate(delegate)
     with FlowWithContextOps[Out, CtxOut, Mat] {

akka-stream/src/main/scala/akka/stream/scaladsl/FlowWithContextOps.scala

@@ -9,7 +9,6 @@ import scala.concurrent.Future
 import scala.language.higherKinds
 import scala.annotation.unchecked.uncheckedVariance
 import akka.NotUsed
-import akka.annotation.ApiMayChange
 import akka.dispatch.ExecutionContexts
 import akka.stream._
 import akka.util.ConstantFun
@@ -19,9 +18,7 @@ import akka.event.LoggingAdapter
  * Shared stream operations for [[FlowWithContext]] and [[SourceWithContext]] that automatically propagate a context
  * element with each data element.
  *
- * API MAY CHANGE
  */
-@ApiMayChange
 trait FlowWithContextOps[+Out, +Ctx, +Mat] {
   type ReprMat[+O, +C, +M] <: FlowWithContextOps[O, C, M] {
     type ReprMat[+OO, +CC, +MatMat] = FlowWithContextOps.this.ReprMat[OO, CC, MatMat]

akka-stream/src/main/scala/akka/stream/scaladsl/Source.scala

@@ -7,7 +7,7 @@ package akka.stream.scaladsl
 import java.util.concurrent.CompletionStage
 
 import akka.actor.{ ActorRef, Cancellable, Props }
-import akka.annotation.{ ApiMayChange, InternalApi }
+import akka.annotation.InternalApi
 import akka.stream.actor.ActorPublisher
 import akka.stream.impl.Stages.DefaultAttributes
 import akka.stream.impl.fusing.GraphStages
@@ -222,10 +222,6 @@ final class Source[+Out, +Mat](
       combineRest(2, rest.iterator)
     })
 
-  /**
-   * API MAY CHANGE
-   */
-  @ApiMayChange
   def asSourceWithContext[Ctx](f: Out => Ctx): SourceWithContext[Out, Ctx, Mat] =
     new SourceWithContext(this.map(e => (e, f(e))))
 }