ArmVirtPkg: Remove duplicated words

In an effort to clean the documentation of the above
package, remove duplicated words.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.muajwar@arm.com>

ArmVirtPkg/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.c

@@ -55,7 +55,7 @@ GetSerialConsolePortAddress (
     return EFI_INVALID_PARAMETER;
   }
 
-  // The "chosen" node resides at the the root of the DT. Fetch it.
+  // The "chosen" node resides at the root of the DT. Fetch it.
   ChosenNode = fdt_path_offset (Fdt, "/chosen");
   if (ChosenNode < 0) {
     return EFI_NOT_FOUND;