Every XCode version changes how to view all breakpoints. XCode 3 ⌘ + ALT + B. XCode 4 ⌘ + 7.
⌘ + ALT + B
⌘ + 7
In XCode 5:
⌘ + 8 to display all breakpoints
⌘ + 8
⌘ + A to select all breakpoints
⌘ + A
DELETE to remove them this can take a few seconds
DELETE