nomacs: remove unused patch

This patch became obsolete in the previous update, so can be removed.

pkgs/applications/graphics/nomacs/nomacs-iostream.patch

@@ -1,26 +0,0 @@
-diff --git a/src/DkCore/DkMetaData.cpp b/src/DkCore/DkMetaData.cpp
-index d195757e..affec7be 100644
---- a/src/DkCore/DkMetaData.cpp
-+++ b/src/DkCore/DkMetaData.cpp
-@@ -42,6 +42,8 @@
- #include <QApplication>
- #pragma warning(pop)		// no warnings from includes - end
-
-+#include <iostream>
-+
- namespace nmc {
-
- // DkMetaDataT --------------------------------------------------------------------
-diff --git a/src/DkGui/DkNoMacs.cpp b/src/DkGui/DkNoMacs.cpp
-index 6a412f70..bbfba233 100644
---- a/src/DkGui/DkNoMacs.cpp
-+++ b/src/DkGui/DkNoMacs.cpp
-@@ -96,6 +96,8 @@
- #include <QWinTaskbarButton>
- #endif
-
-+#include <iostream>
-+
- namespace nmc {
-
- DkNomacsOSXEventFilter::DkNomacsOSXEventFilter(QObject *parent) : QObject(parent) {