Remove unused cmake::IssueMessage overload

All callers now pass a full backtrace so we do not need the alternative
that takes a cmListFileContext directly.  Drop this overload to remove
the code duplication.

Source/cmake.cxx

@@ -2784,41 +2784,6 @@ void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
   displayMessage(t, msg);
 }
 
-//----------------------------------------------------------------------------
-void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
-                         cmListFileContext const& lfc,
-                         bool force)
-{
-  if (!force)
-    {
-    // override the message type, if needed, for warnings and errors
-    cmake::MessageType override = this->ConvertMessageType(t);
-    if (override != t)
-      {
-      t = override;
-      force = true;
-      }
-    }
-
-  if (!force && !this->IsMessageTypeVisible(t))
-    {
-    return;
-    }
-
-  std::ostringstream msg;
-  if (!this->PrintMessagePreamble(t, msg))
-    {
-    return;
-    }
-
-  // Add the immediate context.
-  msg << (lfc.Line ? " at " : " in ") << lfc;
-
-  printMessageText(msg, text);
-
-  displayMessage(t, msg);
-}
-
 //----------------------------------------------------------------------------
 std::vector<std::string> cmake::GetDebugConfigs()
 {

Source/cmake.h

@@ -358,9 +358,6 @@ class cmake
   void IssueMessage(cmake::MessageType t, std::string const& text,
         cmListFileBacktrace const& backtrace = cmListFileBacktrace(),
         bool force = false);
-  void IssueMessage(cmake::MessageType t, std::string const& text,
-        cmListFileContext const& lfc,
-        bool force = false);
 
   ///! run the --build option
   int Build(const std::string& dir,