Fix clippy::needless_borrow lint violations (#36444)

Release Notes:

- N/A

crates/agent2/src/tools/context_server_registry.rs

@@ -103,7 +103,7 @@ impl ContextServerRegistry {
                         self.reload_tools_for_server(server_id.clone(), cx);
                     }
                     ContextServerStatus::Stopped | ContextServerStatus::Error(_) => {
-                        self.registered_servers.remove(&server_id);
+                        self.registered_servers.remove(server_id);
                         cx.notify();
                     }
                 }

crates/agent2/src/tools/edit_file_tool.rs

@@ -471,7 +471,7 @@ fn resolve_path(
 
             let parent_entry = parent_project_path
                 .as_ref()
-                .and_then(|path| project.entry_for_path(&path, cx))
+                .and_then(|path| project.entry_for_path(path, cx))
                 .context("Can't create file: parent directory doesn't exist")?;
 
             anyhow::ensure!(

crates/agent2/src/tools/terminal_tool.rs

@@ -80,7 +80,7 @@ impl AgentTool for TerminalTool {
             let first_line = lines.next().unwrap_or_default();
             let remaining_line_count = lines.count();
             match remaining_line_count {
-                0 => MarkdownInlineCode(&first_line).to_string().into(),
+                0 => MarkdownInlineCode(first_line).to_string().into(),
                 1 => MarkdownInlineCode(&format!(
                     "{} - {} more line",
                     first_line, remaining_line_count