fix(tui): remove unused Stylize import from task_progress widget (#562)

Author: echobt

src/cortex-tui/src/widgets/task_progress.rs

@@ -22,7 +22,7 @@ use std::time::{Duration, Instant};
 
 use ratatui::buffer::Buffer;
 use ratatui::layout::{Constraint, Direction, Layout, Rect};
-use ratatui::style::{Modifier, Style, Stylize};
+use ratatui::style::{Modifier, Style};
 use ratatui::text::{Line, Span};
 use ratatui::widgets::{Block, Borders, List, ListItem, Paragraph, Widget};