chore(spans): remove deprecated Spans type (#426)

The `Spans` type (plural, not singular) was replaced with a more ergonomic `Line` type
in Ratatui v0.21.0 and marked deprecated byt left for backwards compatibility. This is now
removed.

- `Line` replaces `Spans`
- `Buffer::set_line` replaces `Buffer::set_spans`

src/buffer.rs

@@ -6,11 +6,10 @@ use std::{
 use unicode_segmentation::UnicodeSegmentation;
 use unicode_width::UnicodeWidthStr;
 
-#[allow(deprecated)]
 use crate::{
     layout::Rect,
     style::{Color, Modifier, Style},
-    text::{Line, Span, Spans},
+    text::{Line, Span},
 };
 
 /// A buffer cell
@@ -334,29 +333,6 @@ impl Buffer {
         (x_offset as u16, y)
     }
 
-    #[allow(deprecated)]
-    #[deprecated(note = "Use `Buffer::set_line` instead")]
-    pub fn set_spans(&mut self, x: u16, y: u16, spans: &Spans<'_>, width: u16) -> (u16, u16) {
-        let mut remaining_width = width;
-        let mut x = x;
-        for span in &spans.0 {
-            if remaining_width == 0 {
-                break;
-            }
-            let pos = self.set_stringn(
-                x,
-                y,
-                span.content.as_ref(),
-                remaining_width as usize,
-                span.style,
-            );
-            let w = pos.0.saturating_sub(x);
-            x = pos.0;
-            remaining_width = remaining_width.saturating_sub(w);
-        }
-        (x, y)
-    }
-
     pub fn set_line(&mut self, x: u16, y: u16, line: &Line<'_>, width: u16) -> (u16, u16) {
         let mut remaining_width = width;
         let mut x = x;

src/text.rs

@@ -60,11 +60,6 @@ pub use masked::Masked;
 mod span;
 pub use span::Span;
 
-/// We keep this for backward compatibility.
-mod spans;
-#[allow(deprecated)]
-pub use spans::Spans;
-
 #[allow(clippy::module_inception)]
 mod text;
 pub use text::Text;

src/text/line.rs

@@ -1,7 +1,6 @@
-#![allow(deprecated)]
 use std::borrow::Cow;
 
-use super::{Span, Spans, Style, StyledGrapheme};
+use super::{Span, Style, StyledGrapheme};
 use crate::layout::Alignment;
 
 #[derive(Debug, Default, Clone, Eq, PartialEq, Hash)]
@@ -180,18 +179,12 @@ impl<'a> From<Line<'a>> for String {
     }
 }
 
-impl<'a> From<Spans<'a>> for Line<'a> {
-    fn from(value: Spans<'a>) -> Self {
-        Self::from(value.0)
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use crate::{
         layout::Alignment,
         style::{Color, Modifier, Style},
-        text::{Line, Span, Spans, StyledGrapheme},
+        text::{Line, Span, StyledGrapheme},
     };
 
     #[test]
@@ -266,15 +259,6 @@ mod tests {
         assert_eq!(vec![span], line.spans);
     }
 
-    #[test]
-    fn test_from_spans() {
-        let spans = vec![
-            Span::styled("Hello,", Style::default().fg(Color::Red)),
-            Span::styled(" world!", Style::default().fg(Color::Green)),
-        ];
-        assert_eq!(Line::from(Spans::from(spans.clone())), Line::from(spans));
-    }
-
     #[test]
     fn test_into_string() {
         let line = Line::from(vec![