Clean up stray lifetime in many0 parser
diff --git a/src/parsers.rs b/src/parsers.rs
index d9361a1..66561c1 100644
--- a/src/parsers.rs
+++ b/src/parsers.rs
@@ -297,7 +297,7 @@
 //
 // Not public API.
 #[doc(hidden)]
-pub fn many0<'a, T>(mut input: Cursor, f: fn(Cursor) -> PResult<T>) -> PResult<Vec<T>> {
+pub fn many0<T>(mut input: Cursor, f: fn(Cursor) -> PResult<T>) -> PResult<Vec<T>> {
     let mut res = Vec::new();
 
     loop {