removed misaligned characters

slides/advriskmin/slides-advriskmin-risk-minimizer.tex

@@ -120,7 +120,7 @@
 \begin{frame}[t]{optimal point-wise predictions}  
 
 To derive the risk minimizer, observe that by the law of total expectation 
-$$    \risk_L(f) &=& \E_{xy} \left[\Lxy\right] 
+$$    \risk_L(f) = \E_{xy} \left[\Lxy\right] 
     = \E_x \left[\E_{y|x}\left[\Lxy~|~\xv = \xv\right]\right].$$
 
 \begin{itemize}