Remove the skip-when-done in selects

Benchmark results

``` Java: (capacity) (chainLength) Mode Cnt Score Error Units BufferedBenchmark.arrayBlockingQueue 1 N/A avgt 5 1061.400 ± 133.222 ns/op BufferedBenchmark.arrayBlockingQueue 10 N/A avgt 5 216.076 ± 44.988 ns/op BufferedBenchmark.arrayBlockingQueue 100 N/A avgt 5 114.979 ± 8.640 ns/op BufferedBenchmark.channel 1 N/A avgt 5 205.979 ± 43.571 ns/op BufferedBenchmark.channel 10 N/A avgt 5 178.879 ± 47.869 ns/op BufferedBenchmark.channel 100 N/A avgt 5 150.038 ± 41.798 ns/op ChainedBenchmark.channelChain 0 100 avgt 5 1010.673 ± 17.449 ns/op ChainedBenchmark.channelChain 0 1000 avgt 5 1012.303 ± 6.024 ns/op ChainedBenchmark.channelChain 0 10000 avgt 5 1036.151 ± 11.669 ns/op ChainedBenchmark.channelChain 100 100 avgt 5 30.474 ± 0.695 ns/op ChainedBenchmark.channelChain 100 1000 avgt 5 29.281 ± 1.444 ns/op ChainedBenchmark.channelChain 100 10000 avgt 5 31.598 ± 1.293 ns/op ChainedBenchmark.queueChain 0 100 avgt 5 131.063 ± 33.658 ns/op ChainedBenchmark.queueChain 0 1000 avgt 5 131.006 ± 25.327 ns/op ChainedBenchmark.queueChain 0 10000 avgt 5 128.781 ± 18.160 ns/op ChainedBenchmark.queueChain 100 100 avgt 5 10.571 ± 0.515 ns/op ChainedBenchmark.queueChain 100 1000 avgt 5 10.884 ± 0.060 ns/op ChainedBenchmark.queueChain 100 10000 avgt 5 10.213 ± 0.453 ns/op RendezvousBenchmark.channel N/A N/A avgt 5 178.114 ± 36.489 ns/op RendezvousBenchmark.exchanger N/A N/A avgt 5 94.180 ± 26.463 ns/op RendezvousBenchmark.synchronousQueue N/A N/A avgt 5 605.199 ± 70.727 ns/op SelectBenchmark.selectWithSingleClause N/A N/A avgt 5 227.974 ± 101.529 ns/op SelectBenchmark.selectWithTwoClauses N/A N/A avgt 5 204.359 ± 17.681 ns/op Kotlin: (capacity) (chainLength) Mode Cnt Score Error Units BufferedKotlinBenchmark.channel_defaultDispatcher 1 N/A avgt 5 114.871 ± 0.446 ns/op BufferedKotlinBenchmark.channel_defaultDispatcher 10 N/A avgt 5 50.824 ± 1.774 ns/op BufferedKotlinBenchmark.channel_defaultDispatcher 100 N/A avgt 5 32.545 ± 1.074 ns/op ChainedKotlinBenchmark.channelChain_defaultDispatcher 0 100 avgt 5 74.686 ± 5.148 ns/op ChainedKotlinBenchmark.channelChain_defaultDispatcher 0 1000 avgt 5 63.973 ± 10.688 ns/op ChainedKotlinBenchmark.channelChain_defaultDispatcher 0 10000 avgt 5 61.703 ± 1.901 ns/op ChainedKotlinBenchmark.channelChain_defaultDispatcher 100 100 avgt 5 13.667 ± 0.221 ns/op ChainedKotlinBenchmark.channelChain_defaultDispatcher 100 1000 avgt 5 13.101 ± 0.471 ns/op ChainedKotlinBenchmark.channelChain_defaultDispatcher 100 10000 avgt 5 15.148 ± 0.585 ns/op ChainedKotlinBenchmark.channelChain_eventLoop 0 100 avgt 5 91.823 ± 4.077 ns/op ChainedKotlinBenchmark.channelChain_eventLoop 0 1000 avgt 5 160.407 ± 13.771 ns/op ChainedKotlinBenchmark.channelChain_eventLoop 0 10000 avgt 5 101.670 ± 16.674 ns/op ChainedKotlinBenchmark.channelChain_eventLoop 100 100 avgt 5 29.764 ± 0.351 ns/op ChainedKotlinBenchmark.channelChain_eventLoop 100 1000 avgt 5 31.678 ± 0.404 ns/op ChainedKotlinBenchmark.channelChain_eventLoop 100 10000 avgt 5 32.070 ± 0.785 ns/op RendezvousKotlinBenchmark.channel_defaultDispatcher N/A N/A avgt 5 142.247 ± 1.944 ns/op SelectKotlinBenchmark.selectWithSingleClause_defaultDispatcher N/A N/A avgt 5 252.869 ± 8.839 ns/op SelectKotlinBenchmark.selectWithTwoClauses_defaultDispatcher N/A N/A avgt 5 361.351 ± 11.390 ns/op ```

softwaremill / jox

Remove the skip-when-done in selects #41