tests(hooks): remove < 3.0 module skip

why: tmux < 3.2 is now deprecated. The module-level skip for
tmux < 3.0 is no longer needed since all supported versions
have hook array support.

what:
- Remove module-level pytest.skip for has_lt_version("3.0")
- Remove unused has_lt_version import

Author: tony

tests/test_hooks.py

@@ -8,17 +8,11 @@
 
 from libtmux._internal.constants import Hooks
 from libtmux._internal.sparse_array import SparseArray
-from libtmux.common import has_gte_version, has_lt_version
+from libtmux.common import has_gte_version
 
 if t.TYPE_CHECKING:
     from libtmux.server import Server
 
-if has_lt_version("3.0"):
-    pytest.skip(
-        reason="only support hooks in tmux 3.0 and above",
-        allow_module_level=True,
-    )
-
 
 def test_hooks_raw_cmd(
     server: Server,