Remove getCanonicalQLClass() from MacroInvocationExpr and MacroInvocationStmt.

Author: zlaski-semmle

cpp/ql/src/semmle/code/cpp/Macro.qll

@@ -277,8 +277,6 @@ deprecated class MacroInvocationExpr extends Expr {
     exists(MacroInvocation i | this = i.getExpr())
   }
 
-  override string getCanonicalQLClass() { result = "MacroInvocationExpr" }
-
   /**
    * Gets the macro invocation of which this is the top-level expression.
    */
@@ -305,8 +303,6 @@ deprecated class MacroInvocationStmt extends Stmt {
     exists(MacroInvocation i | this = i.getStmt())
   }
 
-  override string getCanonicalQLClass() { result = "MacroInvocationStmt" }
-
   /**
    * Gets the macro invocation of which this is the top-level statement.
    */