[runtime] System.Web.Extensions must not be remapped to the current f…

…ramework.

The reason for this is applications which still use Sys.Web.Ext 1.0* (note: 1.0 does NOT
mean the assembly is for the 1.x runtime - it's for 2.0). Remapping would cause 1.0* not
to be loaded, instead a 3.5 or 4.0 assembly would be fetched.

mono/metadata/assembly.c

@@ -114,7 +114,6 @@ static const AssemblyVersionMap framework_assemblies [] = {
 	{"System.ServiceProcess", 0},
 	{"System.Web", 0},
 	{"System.Web.Abstractions", 2},
-	{"System.Web.Extensions", 2},
 	{"System.Web.Mobile", 0},
 	{"System.Web.Routing", 2},
 	{"System.Web.Services", 0},