removed irrelevant comments in chapter 5

paper/5_highlevel.tex

@@ -550,10 +550,6 @@ $M_{486662,2}(\F{p})$ also corresponds to a point on the curve $M_{486662,1}(\F{
 As direct consequence, using \lref{lemma:curve-or-twist}, we prove that for all
 $x \in \F{p}$, there exists a point $P \in \F{p^2}\times\F{p^2}$ on
 $M_{486662,1}(\F{p^2})$ such that $\chi_0(P) = (x,0) = x$.
-%for that you don't need that lemma, because in \F{p^2} you have square roots
-%what you mean is that those points always are either from the curve or from th e twist in \F{p}
-%do you have that as a lemma too?
-%if so that lemma is what should be here
 
 \begin{lstlisting}[language=Coq]
 Lemma x_is_on_curve_or_twist_implies_x_in_Fp2: