Remove broken Sphinx type annotation

sphinx.directives.T has been removed upstream. This commit removes the
type annotation to avoid breaking the extension with Sphinx >= 6

jandd/sphinxext/ip/__init__.py

@@ -20,7 +20,7 @@ from sphinx import addnodes
 from sphinx.addnodes import desc_signature, pending_xref
 from sphinx.application import Sphinx
 from sphinx.builders import Builder
-from sphinx.directives import ObjectDescription, T
+from sphinx.directives import ObjectDescription
 from sphinx.domains import Domain, ObjType
 from sphinx.environment import BuildEnvironment
 from sphinx.errors import NoUri
@@ -63,7 +63,7 @@ class IPRangeDirective(ObjectDescription):
 class IPV4RangeDirective(IPRangeDirective):
     title_prefix = _("IPv4 range")
 
-    def add_target_and_index(self, name: T, sig: str, sig_node: desc_signature) -> None:
+    def add_target_and_index(self, name, sig: str, sig_node: desc_signature) -> None:
         anchor = "ip-ipv4range-{0}".format(sig)
         sig_node["ids"].append(anchor)
         ips = cast(IPDomain, self.env.get_domain("ip"))
@@ -77,7 +77,7 @@ class IPV4RangeDirective(IPRangeDirective):
 class IPV6RangeDirective(IPRangeDirective):
     title_prefix = _("IPv6 range")
 
-    def add_target_and_index(self, name: T, sig: str, signode: desc_signature) -> None:
+    def add_target_and_index(self, name, sig: str, signode: desc_signature) -> None:
         anchor = "ip-ipv6range-{0}".format(sig)
         signode["ids"].append(anchor)
         ips = cast(IPDomain, self.env.get_domain("ip"))