Remove error for "@" in nested codeblocks.

Also removed the corresponding test and resource for this change.

#64

src/Microsoft.AspNet.Razor/Parser/CSharpCodeParser.Statements.cs

@@ -507,13 +507,7 @@ namespace Microsoft.AspNet.Razor.Parser
             else
             {
                 // Throw errors as necessary, but continue parsing
-                if (At(CSharpSymbolType.Keyword))
+                if (At(CSharpSymbolType.LeftBrace))
-                {
-                    Context.OnError(CurrentLocation,
-                                    RazorResources.FormatParseError_Unexpected_Keyword_After_At(
-                                        CSharpLanguageCharacteristics.GetKeyword(CurrentSymbol.Keyword.Value)));
-                }
-                else if (At(CSharpSymbolType.LeftBrace))
                 {
                     Context.OnError(CurrentLocation, RazorResources.ParseError_Unexpected_Nested_CodeBlock);
                 }

src/Microsoft.AspNet.Razor/Properties/RazorResources.Designer.cs

@@ -694,22 +694,6 @@ namespace Microsoft.AspNet.Razor
             return GetString("Parser_Context_Not_Set");
         }
 
-        /// <summary>
-        /// Unexpected "{0}" keyword after "@" character.  Once inside code, you do not need to prefix constructs like "{0}" with "@".
-        /// </summary>
-        internal static string ParseError_Unexpected_Keyword_After_At
-        {
-            get { return GetString("ParseError_Unexpected_Keyword_After_At"); }
-        }
-
-        /// <summary>
-        /// Unexpected "{0}" keyword after "@" character.  Once inside code, you do not need to prefix constructs like "{0}" with "@".
-        /// </summary>
-        internal static string FormatParseError_Unexpected_Keyword_After_At(object p0)
-        {
-            return string.Format(CultureInfo.CurrentCulture, GetString("ParseError_Unexpected_Keyword_After_At"), p0);
-        }
-
         /// <summary>
         /// "{0}" is a reserved word and cannot be used in implicit expressions.  An explicit expression ("@()") must be used.
         /// </summary>

src/Microsoft.AspNet.Razor/RazorResources.resx

@@ -264,9 +264,6 @@ Instead, wrap the contents of the block in "{{}}":
   <data name="Parser_Context_Not_Set" xml:space="preserve">
     <value>Parser was started with a null Context property.  The Context property must be set BEFORE calling any methods on the parser.</value>
   </data>
-  <data name="ParseError_Unexpected_Keyword_After_At" xml:space="preserve">
-    <value>Unexpected "{0}" keyword after "@" character.  Once inside code, you do not need to prefix constructs like "{0}" with "@".</value>
-  </data>
   <data name="ParseError_ReservedWord" xml:space="preserve">
     <value>"{0}" is a reserved word and cannot be used in implicit expressions.  An explicit expression ("@()") must be used.</value>
   </data>

test/Microsoft.AspNet.Razor.Test/Parser/CSharp/CSharpBlockTest.cs

@@ -35,7 +35,7 @@ namespace Microsoft.AspNet.Razor.Test.Parser.CSharp
         }
 
         [Fact]
-        public void NestedCodeBlockWithAtCausesError()
+        public void NestedCodeBlockWithAtDoesntCauseError()
         {
             ParseBlockTest("if (true) { @if(false) { } }",
                            new StatementBlock(
@@ -44,10 +44,7 @@ namespace Microsoft.AspNet.Razor.Test.Parser.CSharp
                                    Factory.CodeTransition(),
                                    Factory.Code("if(false) { }").AsStatement()
                                    ),
-                               Factory.Code(" }").AsStatement()),
+                               Factory.Code(" }").AsStatement()));
-                           new RazorError(
-                               RazorResources.FormatParseError_Unexpected_Keyword_After_At("if"),
-                               new SourceLocation(13, 0, 13)));
         }
 
         [Fact]