Remove language servers from buffers

Co-Authored-By: Nathan Sobo <nathan@zed.dev>
Co-Authored-By: Antonio Scandurra <antonio@zed.dev>
Co-Authored-By: Keith Simmons <keith@zed.dev>

crates/editor/src/editor.rs

@@ -32,8 +32,8 @@ use items::{BufferItemHandle, MultiBufferItemHandle};
 use itertools::Itertools as _;
 pub use language::{char_kind, CharKind};
 use language::{
-    AnchorRangeExt as _, BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic,
-    DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId,
+    BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
+    Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
 };
 use multi_buffer::MultiBufferChunks;
 pub use multi_buffer::{
@@ -8235,9 +8235,6 @@ mod tests {
             .update(cx, |project, cx| project.open_buffer(project_path, cx))
             .await
             .unwrap();
-        buffer.update(cx, |buffer, cx| {
-            buffer.set_language_server(Some(language_server), cx);
-        });
 
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
         buffer.next_notification(&cx).await;

crates/editor/src/multi_buffer.rs

@@ -8,8 +8,8 @@ use gpui::{AppContext, Entity, ModelContext, ModelHandle, Task};
 pub use language::Completion;
 use language::{
     char_kind, Buffer, BufferChunks, BufferSnapshot, CharKind, Chunk, DiagnosticEntry, Event, File,
-    Language, Outline, OutlineItem, Selection, ToOffset as _, ToPoint as _, ToPointUtf16 as _,
-    TransactionId,
+    Language, OffsetRangeExt, Outline, OutlineItem, Selection, ToOffset as _, ToPoint as _,
+    ToPointUtf16 as _, TransactionId,
 };
 use std::{
     cell::{Ref, RefCell},
@@ -25,7 +25,7 @@ use text::{
     locator::Locator,
     rope::TextDimension,
     subscription::{Subscription, Topic},
-    AnchorRangeExt as _, Edit, Point, PointUtf16, TextSummary,
+    Edit, Point, PointUtf16, TextSummary,
 };
 use theme::SyntaxTheme;