test(katex): test done, looks like we figured out the issue

lectures/math/index.md

@@ -18,10 +18,6 @@ Note that by "first principles", I really do mean _first_ principles, not third
 
 In keeping with the Commonwealth nomenclature, each module comprises several lectures. Please click on the associated links to see a detailed breakdown of lectures per module. The topics listed below survey broadly what each module aims to cover.
 
-TEST: does KaTeX render inline variables $n \in N$ correctly? What about this one:
-
-\\[\forall n \in N.\ n \geq 0.\\]
-
 ### [[link]][single]   Single variable calculus
 
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