Please do not simply blank pages, as it can be considered vandalism.  Looking at your edit history, I'm guessing that you beleive the Saki Shimazu page to be a misspelling of the same person as the Saki Shimizu page you've created.  Very well.  Blanking the old page is not the answer.  For future reference, the corrent way to handle this would have been to Move one page to another.  But, due to abuse by vandals, this feature is only availible to logged in users who's accounts have existed for a certain short period of time.  Even so, that option is no longer availible since you have already created the newly named page. 

 So the remaining question is, what is the proper thing to do with the old page, if you cannot blank it.  The proper solution is to create a redirect from the old page to the new one so that anyone looking under the old name will be automatically sent to the new page, and any internal links to the old page will also get forwarded when used. 

 Check out the link in the above paragraph for information on how to create a redirect.  I'll leave the job to you, as this will help you in learning how things function around here. 

 In closing, welcome to Wikepedia, and happy editing.