Revert "Remove unused option in server API"

pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart

Index: pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart
diff --git a/pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart b/pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart
index 14648d40496ea9b573920ca48a1c90d8c1f9c694..f3c2d98a8556fd5558227675900765721c546a7f 100644
--- a/pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart
+++ b/pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart
@@ -1714,8 +1714,6 @@ class AnalysisSetAnalysisRootsParams implements HasToJson {
   }
 
   /**
-   * Deprecated: This field is now ignored by server.
-   *
    * A mapping from source directories to package roots that should override
    * the normal package: URI resolution mechanism.
    *
@@ -1739,8 +1737,6 @@ class AnalysisSetAnalysisRootsParams implements HasToJson {
   Map<String, String> get packageRoots => _packageRoots;
 
   /**
-   * Deprecated: This field is now ignored by server.
-   *
    * A mapping from source directories to package roots that should override
    * the normal package: URI resolution mechanism.
    *