Try to make pre-commit pass

Checks like this can only be useful if we expect them to pass - checks that always fail are a waste of time and electricity.

I've applied the isort changes, because these are relatively small and simple. The other checks that are failing on MR !499 (merged) I have just removed, because fixing across the repo required massive changes. We can easily add them back if we decide to, for instance, make every notebook PEP 8 compliant.

src/cal_tools/agipdutils_ff.py

@@ -107,7 +107,7 @@ def fit_n_peaks(x: np.ndarray,
     :param n_peaks: Number of Gaussian peaks to fit (min 2, max 4)
     :param fix_d01: Fix position of peaks to the distance between noise and
     first photon peak.
-    :param sigma_limit: Repeat fit keeping only bins within mu +- 
+    :param sigma_limit: Repeat fit keeping only bins within mu +-
     sigma_limit sigma
     :return: minuit object
     """
@@ -164,7 +164,7 @@ def fit_n_peaks(x: np.ndarray,
 
     minuit = Minuit(chi2_f, **pars, pedantic=False)
     minuit.migrad()
-    
+
     if sigma_limit > 0 :
         res = minuit.fitarg
         sel2 = (np.abs(x - res['g0mean']) < sigma_limit*res['g0sigma']) | \
@@ -173,7 +173,7 @@ def fit_n_peaks(x: np.ndarray,
                (np.abs(x - res['g3mean']) < sigma_limit*res['g3sigma'])
         sel = sel & sel2
         minuit.migrad()
-        
+
     if do_minos:
         if minuit.get_fmin().is_valid:
             minuit.minos()