RUBY-18604 Remove Docker options from Remote Interpreters configuration

platform/platform-impl/src/com/intellij/remote/ext/CredentialsLanguageContribution.java

@@ -18,6 +18,22 @@ package com.intellij.remote.ext;
 import com.intellij.openapi.extensions.ExtensionPointName;
 
 public abstract class CredentialsLanguageContribution<T> {
+  public static final CredentialsLanguageContribution<Void> NOT_IMPLEMENTED = new CredentialsLanguageContribution<Void>() {
+    @Override
+    public CredentialsTypeEx getType() {
+      return null;
+    }
+
+    @Override
+    public Class<Void> getLanguageContributionClass() {
+      return null;
+    }
+
+    @Override
+    public Void getLanguageContribution() {
+      return null;
+    }
+  };
 
   public static final ExtensionPointName<CredentialsLanguageContribution> EP_NAME
     = ExtensionPointName.create("com.intellij.remote.credentialsLanguageContribution");