remove all sizeof asserts

source/dyaml/event.d

@@ -102,8 +102,6 @@ struct Event
         assert(id == EventID.documentStart, "Only DocumentStart events have tag directives.");
         return _tagDirectives;
     }
-
-    static assert(Event.sizeof <= 64, "Event struct larger than expected");
 }
 
 /**

source/dyaml/exception.d

@@ -57,8 +57,6 @@ struct Mark
         }
 }
 
-static assert(Mark.sizeof == 4, "Unexpected Mark size");
-
 // A struct storing parameters to the MarkedYAMLException constructor.
 struct MarkedYAMLExceptionData
 {

source/dyaml/token.d

@@ -95,8 +95,6 @@ struct Token
     /// Get string representation of the token ID.
     @property string idString() @safe pure const {return id.to!string;}
 }
-static assert(Token.sizeof <= 32, "Token has unexpected size");
-
 
 /// Construct a directive token.
 ///