Remove unused variable

Author: sualeh

schemacrawler-ai-mcpserver/src/main/java/schemacrawler/tools/command/aichat/mcp/server/ConnectionService.java

@@ -52,7 +52,6 @@ public static void instantiate(
   private final Catalog catalog;
   private final Connection connection;
   private final McpServerCommandOptions options;
-  private boolean isDryRun = false;
 
   /**
    * Private constructor to prevent direct instantiation. Use {@link