Revert "updated tests to validate that context's executor is not shut down"

This reverts commit ba4e620add7848b0ca775607aac143814cc0dbdf.
Revert "SocketServer now uses ExecutorService from context"

This reverts commit d35ea443e333486a69506a8ff660071790d819bf.
Revert "modified SocketRemoteTest to validate executor service shutdown behavior"

This reverts commit bbd4100e30cd6b2fbd5fce80bf6031fd6ae0e4ad.
Revert "SocketRemote now uses ExecutorService from context"

This reverts commit e84874634c30889af380671811345fba4ab15dd2.
Revert "updated tests to validate that context's executor is not shut down"

This reverts commit 9e06b6be7e6bace591dac20373a51eed59264ad2.
Revert "ServerSocketAppenderBase now uses ExecutorService from context"

This reverts commit 64971049c80e8700506373b2fbb65541a704436e.