[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

src/pyhf/experimental/modifiers.py

@@ -153,7 +153,6 @@ def apply(self, pars):
 def add_custom_modifier(
     funcname: str, deps: list[str], newparams: dict[str, dict[str, Sequence[float]]]
 ) -> dict[str, tuple[BaseBuilder, BaseApplier]]:
-
     _builder = make_builder(funcname, deps, newparams)
     _applier = make_applier(funcname, deps, newparams)