Remove the unnecessary filtering, the bot itself has been filtered out already in ActivityHandler.java

[fredrikluo]

The bot itself has been filtered in activityHandler.java see:

botbuilder-java/libraries/bot-builder/src/main/java/com/microsoft/bot/builder/ActivityHandler.java

Line 142 in 45ad1e0

.anyMatch(m -> !StringUtils.equals(m.getId(), activity.getRecipient().getId()))

Suggest removing this line from the sample since it's quite confusing, it could lead people to think onMembersAdded will be called when the bot is added to the channel, which is reasonable since bot service does send out MemebersAdd when a bot is added.

This, of course, will never happen.

[tracyboehrer]

@fredrikluo Thanks! I'll look into the build issue. I don't believe it's related to your PR.