You shouldn't need to be in developer mode. Just go into your "Settings" then "Apps" and scroll right/left to the "ALL" tab. Now scroll down and locate the apps you want to access, and tap the app name. In with each app you should see options like "Clear Cache", "Clear Data", "Uninstall Updates", "Uninstall", "Disable", etc. (Note: not all apps will have all options.)
If it is an app you never use, but that is not removable, you can use the "Uninstall Updates" and "Disable" options. However it will still then prompt you to update regularly, and when the device is restarted it will be re-enabled. Some will actually turn themselves back on even without a reboot.
IMPORTANT NOTE: Be careful of which apps you mess with as you can do more...