Remove 'declared but not used' messages
Remove 'declared but not used' messages

dpvc/MathJax-dev,dpvc/MathJax-dev,Khan/MathJax-dev,Khan/MathJax-dev,dpvc/MathJax-dev,dpvc/MathJax-dev,dpvc/MathJax-dev,dpvc/MathJax-dev,Khan/MathJax-dev,Khan/MathJax-dev,Khan/MathJax-dev,Khan/MathJax-dev