fixup! Remove unused plugin - we use dependabot

Author: trask

build.gradle.kts

@@ -1,7 +1,6 @@
 plugins {
   id("idea")
 
-  id("com.github.ben-manes.versions")
   id("ai.spotless-conventions")
 }
 

dependencyManagement/build.gradle.kts

@@ -1,9 +1,5 @@
-import com.github.benmanes.gradle.versions.updates.DependencyUpdatesTask
-
 plugins {
   `java-platform`
-
-  id("com.github.ben-manes.versions")
 }
 
 data class DependencySet(val group: String, val version: String, val modules: List<String>)
@@ -109,14 +105,3 @@ fun isNonStable(version: String): Boolean {
   val isStable = stableKeyword || regex.matches(version) || isGuava
   return isStable.not()
 }
-
-tasks {
-  named<DependencyUpdatesTask>("dependencyUpdates") {
-    revision = "release"
-    checkConstraints = true
-
-    rejectVersionIf {
-      isNonStable(candidate.version)
-    }
-  }
-}