git: Don't call git2::Repository::find_remote for every blamed buffer (#44107)

We already store the remote URLs for `origin` and `upstream` in the
`RepositorySnapshot`, so just use that data. Follow-up to #44092.

Release Notes:

- N/A

crates/git/src/blame.rs

@@ -19,7 +19,6 @@ pub use git2 as libgit;
 pub struct Blame {
     pub entries: Vec<BlameEntry>,
     pub messages: HashMap<Oid, String>,
-    pub remote_url: Option<String>,
 }
 
 #[derive(Clone, Debug, Default)]
@@ -36,7 +35,6 @@ impl Blame {
         working_directory: &Path,
         path: &RepoPath,
         content: &Rope,
-        remote_url: Option<String>,
     ) -> Result<Self> {
         let output = run_git_blame(git_binary, working_directory, path, content).await?;
         let mut entries = parse_git_blame(&output)?;
@@ -53,11 +51,7 @@ impl Blame {
             .await
             .context("failed to get commit messages")?;
 
-        Ok(Self {
-            entries,
-            messages,
-            remote_url,
-        })
+        Ok(Self { entries, messages })
     }
 }
 

crates/git/src/repository.rs

@@ -1494,28 +1494,17 @@ impl GitRepository for RealGitRepository {
         let git_binary_path = self.any_git_binary_path.clone();
         let executor = self.executor.clone();
 
-        async move {
-            let remote_url = if let Some(remote_url) = self.remote_url("upstream").await {
-                Some(remote_url)
-            } else if let Some(remote_url) = self.remote_url("origin").await {
-                Some(remote_url)
-            } else {
-                None
-            };
-            executor
-                .spawn(async move {
-                    crate::blame::Blame::for_path(
-                        &git_binary_path,
-                        &working_directory?,
-                        &path,
-                        &content,
-                        remote_url,
-                    )
-                    .await
-                })
+        executor
+            .spawn(async move {
+                crate::blame::Blame::for_path(
+                    &git_binary_path,
+                    &working_directory?,
+                    &path,
+                    &content,
+                )
                 .await
-        }
-        .boxed()
+            })
+            .boxed()
     }
 
     fn file_history(&self, path: RepoPath) -> BoxFuture<'_, Result<FileHistory>> {