1 files changed, 2 insertions, 15 deletions
diff --git a/sphinx/directives/code.py b/sphinx/directives/code.py
index 8c19dd0c5..fabf259e8 100644
--- a/sphinx/directives/code.py
+++ b/sphinx/directives/code.py
@@ -7,9 +7,9 @@
 """
 
 import sys
-import warnings
 from difflib import unified_diff
 from typing import Any, Dict, List, Tuple
+from typing import TYPE_CHECKING
 
 from docutils import nodes
 from docutils.nodes import Element, Node
@@ -18,14 +18,12 @@ from docutils.statemachine import StringList
 
 from sphinx import addnodes
 from sphinx.config import Config
-from sphinx.deprecation import RemovedInSphinx40Warning
 from sphinx.locale import __
 from sphinx.util import logging
 from sphinx.util import parselinenos
 from sphinx.util.docutils import SphinxDirective
 
-if False:
-    # For type annotation
+if TYPE_CHECKING:
     from sphinx.application import Sphinx
 
 logger = logging.getLogger(__name__)
@@ -57,16 +55,6 @@ class Highlight(SphinxDirective):
                                        linenothreshold=linenothreshold)]
 
 
-class HighlightLang(Highlight):
-    """highlightlang directive (deprecated)"""
-
-    def run(self) -> List[Node]:
-        warnings.warn('highlightlang directive is deprecated. '
-                      'Please use highlight directive instead.',
-                      RemovedInSphinx40Warning, stacklevel=2)
-        return super().run()
-
-
 def dedent_lines(lines: List[str], dedent: int, location: Tuple[str, int] = None) -> List[str]:
     if not dedent:
         return lines
@@ -468,7 +456,6 @@ class LiteralInclude(SphinxDirective):
 
 def setup(app: "Sphinx") -> Dict[str, Any]:
     directives.register_directive('highlight', Highlight)
-    directives.register_directive('highlightlang', HighlightLang)
     directives.register_directive('code-block', CodeBlock)
     directives.register_directive('sourcecode', CodeBlock)
     directives.register_directive('literalinclude', LiteralInclude)