- debugger: Remove some dead-code (these function doesn't seem to be called at all)

git-svn-id: https://svn.code.sf.net/p/codeblocks/code/trunk@9289 2a5c6006-c6dd-42ca-98ab-0921f2732cef
- debugger: Fix warning introduced in r9288

git-svn-id: https://svn.code.sf.net/p/codeblocks/code/trunk@9290 2a5c6006-c6dd-42ca-98ab-0921f2732cef
* debugger: Fix some crashes, when all debugger plugins have been unloaded

git-svn-id: https://svn.code.sf.net/p/codeblocks/code/trunk@9291 2a5c6006-c6dd-42ca-98ab-0921f2732cef
* debugger: Fix wx29 warning that the Enable method is called for invalid menu item

git-svn-id: https://svn.code.sf.net/p/codeblocks/code/trunk@9292 2a5c6006-c6dd-42ca-98ab-0921f2732cef