devel/py-azure-mgmt-containerservice: Remove outdated PYTHON_REL check after lang/python37 removal

Approved by:	portmgr (blanket)
With hat:	python

devel/py-azure-mgmt-containerservice/Makefile

@@ -19,10 +19,4 @@ USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
-.include <bsd.port.pre.mk>
-
-.if ${PYTHON_REL} < 30800
-RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}typing-extensions>=4.3.0:devel/py-typing-extensions@${PY_FLAVOR}
-.endif
-
-.include <bsd.port.post.mk>
+.include <bsd.port.mk>