Remove Appveyor CI for now
Remove Appveyor CI for now

Queue times are too high there.

benbenw/jmeter,ham1/jmeter,apache/jmeter,etnetera/jmeter,apache/jmeter,apache/jmeter,etnetera/jmeter,benbenw/jmeter,etnetera/jmeter,ham1/jmeter,ham1/jmeter,apache/jmeter,ham1/jmeter,apache/jmeter,benbenw/jmeter,benbenw/jmeter,etnetera/jmeter,ham1/jmeter,etnetera/jmeter