HADOOP-17672.Remove an invalid comment content in the FileContext class. (#2961)

Co-authored-by: zhujianghua <zhujianghua@zhujianghuadeMacBook-Pro.local>
Signed-off-by: Ayush Saxena <ayushsaxena@apache.org>

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileContext.java

@@ -358,11 +358,6 @@ public class FileContext implements PathCapabilities {
     }
   }
   
-  /**
-   * Protected Static Factory methods for getting a FileContexts
-   * that take a AbstractFileSystem as input. To be used for testing.
-   */
-
   /**
    * Create a FileContext with specified FS as default using the specified
    * config.