Certain pages of your website which you don't want search engine to index and display result about can be removed from its database.
You can use Google webmaster tool for adding request of removing specific URL. You can also send request for reconsideration.
Before making request, you need to make sure that the page you want to remove from result, must be blocked by robots. txt. You can use non archive meta tag as well which indicate not to index the page.
Without blocking the page, you wouldn't be able to remove it completely form the result.
You can redirect that page to new url of website then after some days google automatic take new page instead of old url which you want to remove.
You may have to wait until google crawls through your website completely.
i think you should wait for next crawling session for that. and it will be get removed on its own by crawling by search engines.
I think redirection is good idea. Redirect old page url to new url through 301 redirection methods.
Easiest and most used way to remove webpages from the search index of search engine is to put those pages urls in robot.txt file, instructing Search engines not to index.