Check the following sentences:
1: You need not to bother about this.
2: You need not bother about this.
I hope both of above sentences mean the same thing. Right?
In the sentence #2 to has been omitted but still sentence #2 mean the same thing as sentence #1. There are a lot of many other sentences of this kind where to can be omitted still conserving the meaning. According to what rule can to be omitted? As a foreigner to English language I don't like sentences in which to has been omitted because they don't feel natural to me.