CPP: remove 13 month old deprecation that override an even older deprecation

Author: erik-krogh

cpp/ql/lib/semmle/code/cpp/models/implementations/Printf.qll

@@ -23,8 +23,6 @@ private class Printf extends FormattingFunction, AliasFunction {
 
   override int getFormatParameterIndex() { result = 0 }
 
-  deprecated override predicate isWideCharDefault() { hasName(["wprintf", "wprintf_s"]) }
-
   override predicate isOutputGlobal() { any() }
 
   override predicate parameterNeverEscapes(int n) { n = 0 }
@@ -49,8 +47,6 @@ private class Fprintf extends FormattingFunction {
 
   override int getFormatParameterIndex() { result = 1 }
 
-  deprecated override predicate isWideCharDefault() { hasName("fwprintf") }
-
   override int getOutputParameterIndex(boolean isStream) { result = 0 and isStream = true }
 }