Drop Qt4, libgcrypt, qtmobility dependencies

oracle/src/main.cpp

@@ -30,11 +30,6 @@ int main(int argc, char *argv[])
 {
 	QApplication app(argc, argv);
 
-#if QT_VERSION < 0x050000
-	// gone in Qt5, all source files _MUST_ be utf8-encoded
-	QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
-#endif
-
 	QCoreApplication::setOrganizationName("Cockatrice");
 	QCoreApplication::setOrganizationDomain("cockatrice");
 	// this can't be changed, as it influences the default savepath for cards.xml

oracle/src/oracleimporter.cpp

@@ -1,9 +1,6 @@
 #include "oracleimporter.h"
-#if QT_VERSION < 0x050000
-    #include <QtGui>
-#else
-    #include <QtWidgets>
-#endif
+
+#include <QtWidgets>
 #include <QDebug>
 
 #include "qt-json/json.h"

oracle/src/oraclewizard.cpp

@@ -1,10 +1,6 @@
 #include <QtGui>
-#if QT_VERSION < 0x050000
-    #include <QDesktopServices>
-#else 
-    #include <QStandardPaths>
-    #include <QtConcurrent>
-#endif
+#include <QStandardPaths>
+#include <QtConcurrent>
 #include <QAbstractButton>
 #include <QBuffer>
 #include <QCheckBox>