Remove redundant variable assignment

kitty/fonts/box_drawing.py

@@ -624,7 +624,6 @@ def shade(buf: BufType, width: int, height: int, light: bool = False, invert: bo
     dest = bytearray(width * height) if invert else buf
 
     for r in range(number_of_rows):
-        y = r * square_sz
         is_odd = r % 2 != 0
         if is_odd:
             continue

kitty/layout/grid.py

@@ -64,7 +64,6 @@ class Grid(Layout):
         return layout_func(num_windows, bias=variable_bias(num_windows, biased_map) if num_windows > 1 else None)
 
     def apply_bias(self, idx: int, increment: float, all_windows: WindowList, is_horizontal: bool = True) -> bool:
-        b = self.biased_cols if is_horizontal else self.biased_rows
         num_windows = all_windows.num_groups
         ncols, nrows, special_rows, special_col = calc_grid_size(num_windows)
 

kitty/tabs.py

@@ -360,7 +360,6 @@ class Tab:  # {{{
                 else:
                     cmd = resolved_shell(get_options())
                     check_for_suitability = False
-                cmd = self.args.args or resolved_shell(get_options())
         if check_for_suitability:
             old_exe = cmd[0]
             if not os.path.isabs(old_exe):