Remove unused conf.py files

Co-authored-by: Kwankyu Lee <ekwankyu@gmail.com>

Author: tobiasdiez

src/doc/en/thematic_tutorials/explicit_methods_in_number_theory/conf.py

@@ -2,7 +2,6 @@ doc_sources = [
   'birch.png',
   'birds_eye_view.rst',
   'birds_other.rst',
-  'conf.py',
   'elliptic_curves.rst',
   'generators_for_rings.rst',
   'half_integral.rst',

src/doc/en/thematic_tutorials/explicit_methods_in_number_theory/meson.build

@@ -1,6 +1,5 @@
 doc_sources = [
   'comparison_to_cython.rst',
-  'conf.py',
   'ctypes.rst',
   'ctypes_examples.rst',
   'cvxopt.rst',

src/doc/en/thematic_tutorials/numerical_sage/conf.py

@@ -196,6 +196,15 @@ def update_doc_sources(self: Rewriter, visitor: AstPython):
             target.value.args.arguments.append(StringNode(token))
             if target not in self.modified_nodes:
                 self.modified_nodes += [target]
+        # Remove all files that are no longer existing
+        for file in existing_sources:
+            if not (folder / file).exists():
+                existing_sources.remove(file)
+                token = next((x for x in target.value.args.arguments if getattr(x, "value", None) == file), None)
+                if token is not None:
+                    target.value.args.arguments.remove(token)
+                    if target not in self.modified_nodes:
+                        self.modified_nodes += [target]
 
     # Add all missing meson files in the src/doc folder
     doc_folder = Path(options.sourcedir) / "src" / "doc"