cleanup [platform]: removing remaining implementations from LegacyExternalProductResourceUrls

GitOrigin-RevId: 533a6d9eec64cf1cc437da48ec147c717419a041

platform/platform-api/api-dump.txt

@@ -5391,7 +5391,7 @@ com.intellij.openapi.wm.ext.LibrarySearchHelper
 - a:isLibraryExists(com.intellij.openapi.project.Project):Z
 com.intellij.platform.ide.customization.ExternalProductResourceUrls
 - sf:Companion:com.intellij.platform.ide.customization.ExternalProductResourceUrls$Companion
-- a:computePatchUrl(com.intellij.openapi.util.BuildNumber,com.intellij.openapi.util.BuildNumber):com.intellij.util.Url
+- computePatchUrl(com.intellij.openapi.util.BuildNumber,com.intellij.openapi.util.BuildNumber):com.intellij.util.Url
 - getBugReportUrl():kotlin.jvm.functions.Function1
 - getDownloadPageUrl():com.intellij.util.Url
 - getFeedbackReporter():com.intellij.platform.ide.customization.FeedbackReporter
@@ -5400,7 +5400,7 @@ com.intellij.platform.ide.customization.ExternalProductResourceUrls
 - s:getInstance():com.intellij.platform.ide.customization.ExternalProductResourceUrls
 - getKeyboardShortcutsPdfUrl():com.intellij.util.Url
 - getTechnicalSupportUrl():kotlin.jvm.functions.Function1
-- a:getUpdateMetadataUrl():com.intellij.util.Url
+- getUpdateMetadataUrl():com.intellij.util.Url
 - getWhatIsNewPageUrl():com.intellij.util.Url
 - getYouTubeChannelUrl():com.intellij.util.Url
 f:com.intellij.platform.ide.customization.ExternalProductResourceUrls$Companion

platform/platform-api/src/com/intellij/platform/ide/customization/ExternalProductResourceUrls.kt

@@ -1,4 +1,4 @@
-// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2026 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.platform.ide.customization
 
 import com.intellij.openapi.application.ApplicationManager
@@ -30,13 +30,14 @@ interface ExternalProductResourceUrls {
    * used by JetBrains IDEs as a reference.
    */
   val updateMetadataUrl: Url?
+    get() = null
 
   /**
    * Returns URL which can be used to download a patch from build [from] to build [to].
    * This function is called only if [the metadata][updateMetadataUrl] contains information about a patch for these versions, 
    * and a user initiates update.
    */
-  fun computePatchUrl(from: BuildNumber, to: BuildNumber): Url?
+  fun computePatchUrl(from: BuildNumber, to: BuildNumber): Url? = null
 
   /**
    * Returns a function which computes URL for bug reporting.

platform/platform-impl/src/com/intellij/platform/ide/impl/customization/LegacyExternalProductResourceUrls.kt

@@ -1,24 +1,19 @@
-// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2026 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.platform.ide.impl.customization
 
 import com.intellij.openapi.diagnostic.thisLogger
-import com.intellij.openapi.util.BuildNumber
 import com.intellij.platform.ide.customization.ExternalProductResourceUrls
-import com.intellij.util.Url
 import org.jetbrains.annotations.ApiStatus
 
 @ApiStatus.Internal
-@Suppress("DEPRECATION")
 class LegacyExternalProductResourceUrls : ExternalProductResourceUrls {
   init {
     thisLogger().warn("""
-      |The default implementation LegacyExternalProductResourceUrls is deprecated and will be removed in the future;
+      |The default implementation LegacyExternalProductResourceUrls is deprecated and will be removed in the future.
       |Provide your own implementation of ExternalProductResourceUrls using data which is currently stored in 
       |<idea.platform.prefix>ApplicationInfo.xml file and register it as the service override.
       |IDEs developed by JetBrains should use BaseJetBrainsExternalProductResourceUrls as a superclass for their implementation.
-      |""".trimMargin())
+      |""".trimMargin()
+    )
   }
-
-  override val updateMetadataUrl: Url? = null
-  override fun computePatchUrl(from: BuildNumber, to: BuildNumber): Url? = null
 }