Remove nauert extra (#1659)

Makefile

@@ -36,12 +36,12 @@ gh-pages:
 
 isort-check:
 	isort --case-sensitive --check-only --diff --line-width=88 --multi-line=3 \
-		--project=abjad --project=abjadext --thirdparty=ply --thirdparty=roman \
-		--thirdparty=uqbar --trailing-comma --use-parentheses .
+		--project=abjad --thirdparty=ply --thirdparty=roman --thirdparty=uqbar \
+		--trailing-comma --use-parentheses .
 
 isort-reformat:
-	isort --case-sensitive --line-width=88 --multi-line=3 --project=abjad \
-		--project=abjadext --thirdparty=ply --thirdparty=roman --thirdparty=uqbar \
+	isort --case-sensitive --line-width=88 --multi-line=3 \
+		--project=abjad --thirdparty=ply --thirdparty=roman --thirdparty=uqbar \
 		--trailing-comma  --use-parentheses .
 
 mypy:

docs/source/conf.py

@@ -95,26 +95,4 @@
 uqbar_book_use_black = True
 uqbar_book_use_cache = True
 
-try:
-    import abjadext  # noqa
-
-    uqbar_api_source_paths.append("abjadext")
-    uqbar_book_console_setup.append("import abjadext")
-except ImportError:
-    pass
-
-try:
-    from abjadext import microtones  # noqa
-
-    uqbar_book_console_setup.append("from abjadext import microtones")
-except ImportError:
-    pass
-
-try:
-    from abjadext import nauert  # noqa
-
-    uqbar_book_console_setup.append("from abjadext import nauert")
-except ImportError:
-    pass
-
 version = abjad.__version__

pyproject.toml

@@ -32,7 +32,6 @@ name = "Joséphine Wolf Oberholtzer"
 email = "[email protected]"
 
 [project.optional-dependencies]
-nauert = ["abjad-ext-nauert>=3.21"]
 dev = [
     "black>=25.1.0",
     "flake8>=7.1.1",