rm screengrab which is no longer in the seed

source/2/2.3/2.3.2/screengrab.rst

@@ -1,13 +0,0 @@
-Chapter 2.3.2 Screengrab
-========================
-
-Screengrab is a program for taking screenshots.
-
-Version
--------
-Lubuntu ships with version 1.99 of Screengrab. 
-
-How to Launch
--------------
-To launch screengrab from the menu -> Graphics -> Screengrab or run screengrab from the command line. 
-

source/2/2.3/Graphics_Applications.rst

@@ -6,6 +6,5 @@ Chapter 2.2.3 Graphics Applications
   :titlesonly:
 
   2.3.1/lximage
-  2.3.2/screengrab
+  2.3.2/screenshot
-  2.3.3/screenshot
+  2.3.3/Skanlite
-  2.3.4/Skanlite