Update text and remove duplicate file.

Author: RubelMozumder

contributed_definitions/NXlockin.nxdl.xml

@@ -28,8 +28,6 @@ electric properties, and chemical composition.
 NXspm provides a shared structural framework for capturing essential components such as the instrument configuration, experimental, and 
 sample environments, scan data acquired during measurements, and other relevant metadata. The current version aims to ensure that 
 fundamental technical elements are inherited consistently across specific experiment types like STM, STS, and AFM.
-sample environments, scan data acquired during measurements, and other relevant metadata. The current version aims to ensure that 
-fundamental technical elements are inherited consistently across specific experiment types like STM, STS, and AFM. 
 
 
 .. compound::
@@ -39,6 +37,7 @@ fundamental technical elements are inherited consistently across specific experi
     .. figure:: ../../img/SPM-inheritance.png
         :alt: SPM-inheritance
 	   :width: 50%
+        :height: 50%
 	   :align: center
 
         Inheritance relationship among SPM application definitions.