fix: fetch symbols get (#168)

Author: merolish

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "pyth-agent"
-version = "3.0.2"
+version = "3.0.3"
 edition = "2024"
 
 [[bin]]

Cargo.toml

@@ -240,7 +240,6 @@ struct SymbolResponse {
 
 async fn fetch_symbols(history_url: &Url) -> Result<Vec<SymbolResponse>> {
     let mut url = history_url.clone();
-    url.set_scheme("http").map_err(|_| anyhow!("invalid url"))?;
     url.set_path("/history/v1/symbols");
     let client = Client::new();
     let response = client.get(url).send().await?.error_for_status()?;