build, qt: drop fix_no_printer.patch

The removed patch is not required since switching Qt version from
5.12.11 to 5.15.2.

depends/patches/qt/fix_no_printer.patch

@@ -1,19 +0,0 @@
---- x/qtbase/src/plugins/platforms/cocoa/qprintengine_mac_p.h
-+++ y/qtbase/src/plugins/platforms/cocoa/qprintengine_mac_p.h
-@@ -52,6 +52,7 @@
- //
-
- #include <QtCore/qglobal.h>
-+#include <qpa/qplatformprintdevice.h>
-
- #ifndef QT_NO_PRINTER
-
---- x/qtbase/src/plugins/plugins.pro
-+++ y/qtbase/src/plugins/plugins.pro
-@@ -9,6 +9,3 @@ qtHaveModule(gui) {
-     !android:qtConfig(library): SUBDIRS *= generic
- }
- qtHaveModule(widgets): SUBDIRS += styles
--
--!winrt:qtHaveModule(printsupport): \
--    SUBDIRS += printsupport