Deploy jars instead of extracting them at runtime, remove non-working nvidia fix

logic/JavaChecker.cpp

@@ -1,26 +1,20 @@
 #include "JavaChecker.h"
+#include "MultiMC.h"
+#include <pathutils.h>
 #include <QFile>
 #include <QProcess>
 #include <QMap>
 #include <QTemporaryFile>
 
-#define CHECKER_FILE "JavaChecker.jar"
-
 JavaChecker::JavaChecker(QObject *parent) : QObject(parent)
 {
 }
 
 void JavaChecker::performCheck()
 {
-	checkerJar.setFileTemplate("checker_XXXXXX.jar");
-	checkerJar.open();
-	QFile inner(":/java/checker.jar");
-	inner.open(QIODevice::ReadOnly);
-	checkerJar.write(inner.readAll());
-	inner.close();
-	checkerJar.close();
+	QString checkerJar = PathCombine(MMC->bin(), "jars", "JavaCheck.jar");
 
-	QStringList args = {"-jar", checkerJar.fileName()};
+	QStringList args = {"-jar", checkerJar};
 
 	process.reset(new QProcess());
 	process->setArguments(args);
@@ -42,7 +36,6 @@ void JavaChecker::finished(int exitcode, QProcess::ExitStatus status)
 	killTimer.stop();
 	QProcessPtr _process;
 	_process.swap(process);
-	checkerJar.remove();
 
 	JavaCheckResult result;
 	{
@@ -100,7 +93,6 @@ void JavaChecker::error(QProcess::ProcessError err)
 	if(err == QProcess::FailedToStart)
 	{
 		killTimer.stop();
-		checkerJar.remove();
 
 		JavaCheckResult result;
 		{