If you want to remove the bloatware from your Galaxy S3, the good news is that it is possible. It is not for the faint of heart though, so be sure you understand what you are doing before you actually start the process.
Step 1: You will need to root your phone. This is dangerous and could turn it into a paperweight, so again, learn everything you need to know, including pros and cons before doing so. Here is an article on rooting your Galaxy S3.
Step 2: Use software such as Titanium Backup to actually freeze the apps (bloatware) you don’t want to see anymore. This process freezes them instead of deleting them, which means it is a bit safer than just deleting them.
Step 3: Enjoy your bloatware free Galaxy S3!