Merge #16677: gui: remove unused PlatformStyle::TextColorIcon

bca388db0d gui: remove unused PlatformStyle::TextColorIcon (fanquake)

Pull request description:

  This is unused after #16612.

ACKs for top commit:
  emilengler:
    Concept ACK bca388d
  practicalswift:
    ACK bca388db0d -- diff looks correct & less cruft is better
  hebasto:
    ACK bca388db0d, I have reviewed the code and it looks OK, I agree it can be merge.
  jonasschnelli:
    utACK bca388db0d

Tree-SHA512: ae5c5cfc02cf2e6f138e75e227320f4c430b93bd529a8ead7ba971ceb5bbc997cdb721c6fd8a46a5a897008f0bc6e519422d6beef240b9d2e28ecf4f8cbbcc6a

src/qt/platformstyle.cpp

@@ -114,11 +114,6 @@ QIcon PlatformStyle::SingleColorIcon(const QIcon& icon) const
     return ColorizeIcon(icon, SingleColor());
 }
 
-QIcon PlatformStyle::TextColorIcon(const QString& filename) const
-{
-    return ColorizeIcon(filename, TextColor());
-}
-
 QIcon PlatformStyle::TextColorIcon(const QIcon& icon) const
 {
     return ColorizeIcon(icon, TextColor());

src/qt/platformstyle.h

@@ -33,9 +33,6 @@ public:
     /** Colorize an icon (given object) with the icon color */
     QIcon SingleColorIcon(const QIcon& icon) const;
 
-    /** Colorize an icon (given filename) with the text color */
-    QIcon TextColorIcon(const QString& filename) const;
-
     /** Colorize an icon (given object) with the text color */
     QIcon TextColorIcon(const QIcon& icon) const;