Get runprebuild.sh to generate a vs2010 for xbuild to work with .NET 4 rather than vs2008

At least since 2009, Monodevelop has been able to load vs2010 files as well

runprebuild.sh

@@ -22,21 +22,11 @@ case "$1" in
   
   ;;
 
-
-  'vs2008')
-
-    mono bin/Prebuild.exe /target vs2008
-
-  ;;
-
-
   *)
 
     mono bin/Prebuild.exe /target nant
-    mono bin/Prebuild.exe /target vs2008
+    mono bin/Prebuild.exe /target vs2010
 
   ;;
 
-
 esac
-