Remove patches fixed upstream

Remove patches:

* 00291-setup-Link-ctypes-against-dl-explicitly.patch
  Fixed upstream: https://bugs.python.org/issue32647
* 00292-restore-PyExc_RecursionErrorInst-symbol.patch
  Fixed upstream: https://bugs.python.org/issue30697
* 00294-define-TLS-cipher-suite-on-build-time.patch
  Fixed upstream: https://bugs.python.org/issue31429
* 00301-pathfix-add-n-option-for-no-backup.patch
  Fixed upstream: https://bugs.python.org/issue32885
* 00302-fix-multiprocessing-regression-on-newer-glibcs.patch
  Fixed upstream: https://bugs.python.org/issue33329

Note: the ctypes issue has been fixed differently (better fix)
upstream.

python3.spec

@@ -300,12 +300,6 @@ Patch251: 00251-change-user-install-location.patch
 # Upstream uses Debian-style architecture naming. Change to match Fedora.
 Patch274: 00274-fix-arch-names.patch
 
-# 00291 #
-# Build fails with undefined references to dlopen / dlsym otherwise.
-# See: https://bugzilla.redhat.com/show_bug.cgi?id=1537489
-# and: https://src.fedoraproject.org/rpms/redhat-rpm-config/c/078af19
-Patch291: 00291-setup-Link-ctypes-against-dl-explicitly.patch
-
 # 00312 #
 # Revert "bpo-6721: Hold logging locks across fork() 3b699932e5ac3e7
 # This is a TEMPORARY WORKAROUND for an urgent Fedora bug
@@ -659,7 +653,6 @@ rm Lib/ensurepip/_bundled/*.whl
 %patch205 -p1
 %patch251 -p1
 %patch274 -p1
-%patch291 -p1
 %patch312 -p1
 %patch313 -p1
 %patch315 -p1