i am using wordpress for 4 years and i have uploaded many

Hi, i am using wordpress for 4 years and i have uploaded many pictures / media untill today. When i deleted old media i see that there is a blank space for the media in the post. for example:

http://www.asistanhekim.org/2013/11/saglik-bakanligina-hakkimi-helal-etmiyorum/

http://www.asistanhekim.org/2014/07/celsus-kutuphanesi-konsere-evsahipligi-yapti/

is there a easy way to delete all media and their artefacts?

thank you?