Remove commented-out debugging printf()'s. NFC.
Remove commented-out debugging printf()'s. NFC.

(cherry picked from commit ef275b3f2098adabd8c3ac0e4063738cfc1ccb74)

apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb