lint error fixes

Author: Ragunath1729

lambeq/backend/drawing/drawable.py

@@ -850,8 +850,8 @@ def _add_box(
             off: int,
             x_pos: float,
             y_pos: float,
-            input_nouns: list[str] = None
-    ) -> tuple[list[int], int, list[str]]:
+            input_nouns: list[int] = None
+    ) -> tuple[list[int], int, list[int]]:
         """Add a box to the graph, creating necessary wire endpoints.
 
         Returns
@@ -957,7 +957,6 @@ def _add_box(
         return (scan[:off] + scan_insert + scan[off + len(box.dom):],
                 box_ind, input_nouns)
 
-
     def _make_space_for_frame(self,
                               scan: list[int],
                               off: int,

lambeq/backend/drawing/tikz_backend.py

@@ -126,7 +126,7 @@ def draw_wire(self,
                   color_id: int = 0,
                   **params) -> None:
 
-        color = self._get_wire_color(color_id, **params)
+        # color = self._get_wire_color(color_id, **params)
         out = (-90 if not bend_out or source[0] == target[0]
                else (180 if source[0] > target[0] else 0))
         inp = (90 if not bend_in or source[0] == target[0]