Added local toc. Removed from index page. Re #22082

dev-docs/source/DebuggingUnitTests.rst

 Debugging Unit Tests
 ====================
 
+.. contents::
+  :local:
+
+Using gdb
+---------
+
 Debugging typically requires the test executable to be run directly,
 rather than via ctest (which typically spawns off a separate process to
 run the actual tests). So an example of debugging from the command line

dev-docs/source/index.rst

@@ -25,12 +25,6 @@ Guides
 :doc:`GettingStarted`
    Describes the process of obtaining and building the mantid code base
 
-.. toctree::
-   :maxdepth: 1
-   
-   DebuggingUnitTests
-   DoxygenSetup
-
 ===================
 Component Overviews
 ===================