remove unused function

.coveragerc

@@ -4,6 +4,7 @@ source = bocadillo
 
 [report]
 exclude_lines =
+    pragma: no cover
     raise NotImplementedError
     if __name__ == .__main__.:
     if debug:

bocadillo/compat.py

@@ -8,7 +8,7 @@
 
 try:
     from contextlib import asynccontextmanager
-except ImportError:
+except ImportError:  # pragma: no cover
     assert sys.version_info[:2] == (3, 6)
     from async_generator import asynccontextmanager
 
@@ -27,12 +27,6 @@ async def call_async(func: Callable, *args, sync=False, **kwargs) -> Coroutine:
     return await func(*args, **kwargs)
 
 
-async def call_all_async(funcs: Iterable[Callable], *args, **kwargs):
-    """Call functions in an async manner (with the same arguments)."""
-    for func in funcs:
-        await call_async(func, *args, **kwargs)
-
-
 def camel_to_snake(name: str) -> str:
     """Convert a CamelCase name to its snake_case version."""
     s1 = _camel_regex.sub(r"\1_\2", name)