Don't call AdjustSpaceLimit() explicitly in wxMSW wxTextCtrl any more.

There is no need to do it as this is done by DoWriteText() and
AdjustSpaceLimit() doesn't work correctly if called from outside of it now.
Because of this, also make it private to prevent other accidental calls to it.

Closes #15980.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@76402 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/textctrl.cpp

@@ -1385,15 +1385,8 @@ void wxTextCtrl::DoSetSelection(long from, long to, int flags)
 
 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
 {
-    if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
-    {
-        // update the size limit if needed
-        AdjustSpaceLimit();
-
-        return true;
-    }
-
-    return false;
+    // This method is kept for ABI compatibility only.
+    return wxTextCtrlBase::DoLoadFile(file, fileType);
 }
 
 // ----------------------------------------------------------------------------