Add note about reverts

Author: Robert Kruszewski

FORK.md

@@ -25,4 +25,6 @@
 
 # Reverted
 * [SPARK-25908](https://issues.apache.org/jira/browse/SPARK-25908) - Removal of `monotonicall_increasing_id`, `toDegree`, `toRadians`, `approxCountDistinct`, `unionAll`
-* [SPARK-25862](https://issues.apache.org/jira/browse/SPARK-25862) - Removal of `unboundedPreceding`, `unboundedFollowing`, `currentRow`
+* [SPARK-25862](https://issues.apache.org/jira/browse/SPARK-25862) - Removal of `unboundedPreceding`, `unboundedFollowing`, `currentRow`
+* [SPARK-26127](https://issues.apache.org/jira/browse/SPARK-26127) - Removal of deprecated setters from tree regression and classification models
+* [SPARK-25867](https://issues.apache.org/jira/browse/SPARK-25867) - Removal of KMeans computeCost

project/MimaExcludes.scala

@@ -114,13 +114,6 @@ object MimaExcludes {
     ProblemFilters.exclude[IncompatibleResultTypeProblem]("org.apache.spark.sql.util.ExecutionListenerManager.clone"),
     ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.sql.util.ExecutionListenerManager.this"),
 
-    // [SPARK-25862][SQL] Remove rangeBetween APIs introduced in SPARK-21608
-    ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.sql.functions.unboundedFollowing"),
-    ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.sql.functions.unboundedPreceding"),
-    ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.sql.functions.currentRow"),
-    ProblemFilters.exclude[IncompatibleMethTypeProblem]("org.apache.spark.sql.expressions.Window.rangeBetween"),
-    ProblemFilters.exclude[IncompatibleMethTypeProblem]("org.apache.spark.sql.expressions.WindowSpec.rangeBetween"),
-
     // [SPARK-23781][CORE] Merge token renewer functionality into HadoopDelegationTokenManager
     ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.deploy.SparkHadoopUtil.nextCredentialRenewalTime"),