Revit Python Script Clean useless Reference Planes

It is always difficult to clean reference planes in a file that has been touched by many people. They are everywhere. One rule is to name the one you want to keep. and the unnamed ones can be removed to decease file size or visual discomfort. See script below:
 
#this revit 2013 python is to delete all useless sections and
#unnamed reference planes
import clr

import math
clr.AddReference('RevitAPI')
clr.AddReference('RevitAPIUI')
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB.Architecture import *
from Autodesk.Revit.DB.Analysis import *
from Autodesk.Revit.UI.Selection import *
from Autodesk.Revit.UI import *
from System import *

uidoc = __revit__.ActiveUIDocument
doc = __revit__.ActiveUIDocument.Document
#selection = list(__revit__.ActiveUIDocument.Selection.Elements)
uidoc = __revit__.ActiveUIDocument
selection = __revit__.ActiveUIDocument.Selection.Elements


#methods
def cleanReferencePlane():
    # grab all reference planes
    rpInstancesFilter = ElementClassFilter(clr.GetClrType(ReferencePlane))
    collector = FilteredElementCollector(doc)
    rPlaneId = collector.WherePasses(rpInstancesFilter).ToElementIds()
    # go through ids delete unnamed ones.
    for id in rPlaneId:
        s = doc.get_Element(id).Name
        if s.Equals("Reference Plane", StringComparison.Ordinal):
            doc.Delete(id)
def cleanSection():
    print ("to be done...")
#define a transaction variable and describe the transaction
t = Transaction(doc,'Clean Section ReferencePlane')

#start a transaction in the Revit database
t.Start()

#************ ADD YOUR OWN CODES HERE.******************
#get all filled regions

y=int(raw_input("clean sections and reference planes: 1.clean both 2.clean sections 3. clean reference planes: "))
if y==1:
    print "clean sections and reference planes..."
    cleanReferencePlane()
    cleanSection()
elif y==2:
    print "clean sections only..."
    cleanSection()
elif y==3:
    print "clean reference plane only..."
    cleanReferencePlane()
   


#print "end"
   

#commit the transaction to the Revit database
t.Commit()

#close the script window
raw_input("Enter to Quit.....")
#__window__.Hide()
__window__.Close()
#__window__.Show()