Revert "Add pretty printers for the NPTL lock types"

This reverts commit 62ce266b0b.

The change is not mature enough because it needs the following fixes:

1. Redirect test output to a file like other tests

2. Eliminate the need to use a .gdbinit because distributions will
   break without it.  I should have caught that but I was in too much
   of a hurry to get the patch in :/

3. Feature checking during configure to determine things like minimum
   required gdb version, python-pexpect version, etc. to make sure
   that tests work correctly.

nptl/nptl_lock_constants.pysym

@@ -1,75 +0,0 @@
-#include <pthreadP.h>
-
--- Mutex types
-PTHREAD_MUTEX_KIND_MASK          PTHREAD_MUTEX_KIND_MASK_NP
-PTHREAD_MUTEX_NORMAL
-PTHREAD_MUTEX_RECURSIVE          PTHREAD_MUTEX_RECURSIVE_NP
-PTHREAD_MUTEX_ERRORCHECK         PTHREAD_MUTEX_ERRORCHECK_NP
-PTHREAD_MUTEX_ADAPTIVE_NP
-
--- Mutex status
--- These are hardcoded all over the code; there are no enums/macros for them.
-PTHREAD_MUTEX_DESTROYED         -1
-PTHREAD_MUTEX_UNLOCKED           0
-PTHREAD_MUTEX_LOCKED_NO_WAITERS  1
-
--- For robust mutexes
-PTHREAD_MUTEX_INCONSISTENT
-PTHREAD_MUTEX_NOTRECOVERABLE
-FUTEX_OWNER_DIED
-
--- For robust and PI mutexes
-FUTEX_WAITERS
-FUTEX_TID_MASK
-
--- Mutex attributes
-PTHREAD_MUTEX_ROBUST_NORMAL_NP
-PTHREAD_MUTEX_PRIO_INHERIT_NP
-PTHREAD_MUTEX_PRIO_PROTECT_NP
-PTHREAD_MUTEX_PSHARED_BIT
-PTHREAD_MUTEX_PRIO_CEILING_SHIFT
-PTHREAD_MUTEX_PRIO_CEILING_MASK
-
--- Mutex attribute flags
-PTHREAD_MUTEXATTR_PROTOCOL_SHIFT
-PTHREAD_MUTEXATTR_PROTOCOL_MASK
-PTHREAD_MUTEXATTR_PRIO_CEILING_MASK
-PTHREAD_MUTEXATTR_FLAG_ROBUST
-PTHREAD_MUTEXATTR_FLAG_PSHARED
-PTHREAD_MUTEXATTR_FLAG_BITS
-PTHREAD_MUTEX_NO_ELISION_NP
-
--- Priority protocols
-PTHREAD_PRIO_NONE
-PTHREAD_PRIO_INHERIT
-PTHREAD_PRIO_PROTECT
-
--- These values are hardcoded as well:
--- Value of __mutex for shared condvars.
-PTHREAD_COND_SHARED             ~0l
-
--- Value of __total_seq for destroyed condvars.
-PTHREAD_COND_DESTROYED          -1ull
-
--- __nwaiters encodes the number of threads waiting on a condvar
--- and the clock ID.
--- __nwaiters >> COND_NWAITERS_SHIFT gives us the number of waiters.
-COND_NWAITERS_SHIFT
-
--- Condvar clock IDs
-CLOCK_REALTIME
-CLOCK_MONOTONIC
-CLOCK_PROCESS_CPUTIME_ID
-CLOCK_THREAD_CPUTIME_ID
-CLOCK_MONOTONIC_RAW
-CLOCK_REALTIME_COARSE
-CLOCK_MONOTONIC_COARSE
-
--- Rwlock attributes
-PTHREAD_RWLOCK_PREFER_READER_NP
-PTHREAD_RWLOCK_PREFER_WRITER_NP
-PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP
-
--- 'Shared' attribute values
-PTHREAD_PROCESS_PRIVATE
-PTHREAD_PROCESS_SHARED