Remove an email? If it is one you have received there is always the possibility to delete it and the manner in which you do so depends on what kind of email you are using.
If you are talking about no longer receiving email from a particular company, usually on your profile with that company there is a box to check that you do not want to receive email from them. Be aware that with some companies if you choose not to receive their email they assume you are no longer willing to work for them.