Simplify find_spec statement

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: BSchilperoort

src/powerfit_em/helpers.py

@@ -6,11 +6,11 @@
 
 
 def pyfftw_available() -> bool:
-    return True if find_spec("pyfftw") is not None else False  # noqa: SIM210
+    return find_spec("pyfftw") is not None
 
 
 def opencl_available() -> bool:
-    return True if find_spec("pyopencl") is not None else False  # noqa: SIM210
+    return find_spec("pyopencl") is not None
 
 
 def determine_core_indices(mask):