flake8 fixes for various scripts

GaudiKernel/scripts/merge_confdb2_parts

 #!/usr/bin/env python3
 #####################################################################################
-# (c) Copyright 1998-2020 CERN for the benefit of the LHCb and ATLAS collaborations #
+# (c) Copyright 1998-2023 CERN for the benefit of the LHCb and ATLAS collaborations #
 #                                                                                   #
 # This software is distributed under the terms of the Apache version 2 licence,     #
 # copied verbatim in the file "LICENSE".                                            #
@@ -15,8 +15,8 @@ import shelve
 import sys
 from optparse import OptionParser
 
-from GaudiKernel.DataHandle import DataHandle
-from GaudiKernel.GaudiHandles import *
+from GaudiKernel.DataHandle import DataHandle  # noqa: F401
+from GaudiKernel.GaudiHandles import *  # noqa: F401 F403
 
 parser = OptionParser(  # desc='simple script to merge files',
     usage="%prog [options] input1 input2 ... [output|--output output]"
@@ -72,7 +72,7 @@ if __name__ == "__main__":
                 open(output + ".db", "w")  # make a dummy ".db" version
             elif os.path.exists(output + ".db"):  # this Python uses dbm.ndbm
                 open(output, "w")  # make a dummy version without the artificial ".db"
-    except:
+    except Exception:
         if os.path.exists(output):
             os.remove(output)
         raise

GaudiPolicy/scripts/quick-merge

 #!/usr/bin/env python
 #####################################################################################
-# (c) Copyright 1998-2019 CERN for the benefit of the LHCb and ATLAS collaborations #
+# (c) Copyright 1998-2023 CERN for the benefit of the LHCb and ATLAS collaborations #
 #                                                                                   #
 # This software is distributed under the terms of the Apache version 2 licence,     #
 # copied verbatim in the file "LICENSE".                                            #
@@ -53,7 +53,7 @@ if __name__ == "__main__":
         with open(output, "wb") as out:
             for input in inputs:
                 out.writelines(open(input, "rb"))
-    except:
+    except Exception:
         if os.path.exists(output):
             os.remove(output)
         raise

GaudiProfiling/scripts/GaudiProfiler

 #!/usr/bin/env python
 #####################################################################################
-# (c) Copyright 1998-2019 CERN for the benefit of the LHCb and ATLAS collaborations #
+# (c) Copyright 1998-2023 CERN for the benefit of the LHCb and ATLAS collaborations #
 #                                                                                   #
 # This software is distributed under the terms of the Apache version 2 licence,     #
 # copied verbatim in the file "LICENSE".                                            #
@@ -14,7 +14,6 @@ from __future__ import print_function
 import os
 import shutil
 import sys
-import time
 import xml.parsers.expat
 from subprocess import Popen
 
@@ -62,7 +61,7 @@ if __name__ == "__main__":
         cmask = []
         invmask = []
         sampling_period = []
-        if type([]) != type(es.EVENT):
+        if not isinstance(es.EVENT, list):
             es.EVENT = [es.EVENT]
         for x in range(len(es.EVENT)):
             counter.append(es.EVENT[x].NAME)