remove broken emph refs bib

Author: trevorcampbell

source/references.bib

@@ -20,7 +20,7 @@ @article{knncover
   pages = {21--27}}
 
 @article{penguinpaper,
-  title = {Ecological sexual dimorphism and environmental variability within a community of {A}ntarctic penguins (genus \emph{Pygoscelis})},
+  title = {Ecological sexual dimorphism and environmental variability within a community of {A}ntarctic penguins (genus Pygoscelis)},
   year = {2014},
   author = {Kristen Gorman and Tony Williams and William Fraser},
   journal = {PLoS ONE},