Images Resized Automatically

Here is the CSS
https://pastebin.com/DkxHVgxn

After a little more digging around i found out that the code is written in functions.php

here is the functions.php
https://pastebin.com/ZnMtyK4B

I tried removing the four lines under the Add Thumbnail support but still the thumbnails are oversized ?? any other pointers guyz ?

Images fixed. i was in main.css

article .entry-content img {
/* position: relative;
zoom: 1;*/
height:auto;
/*width:100%;*/
}

Disabled the width and voila images are now properly sized.

Any1 any pointers how can i edit the grooveshark players to the default size. ???