chore: remove all six compat code

erpnext/education/__init__.py

@@ -1,4 +1,3 @@
-
 import frappe
 from frappe import _
 

erpnext/education/doctype/academic_term/academic_term_dashboard.py

@@ -1,4 +1,3 @@
-
 from frappe import _
 
 

erpnext/education/doctype/academic_year/academic_year_dashboard.py

@@ -1,4 +1,3 @@
-
 from frappe import _
 
 

erpnext/education/doctype/course_schedule/course_schedule.py

@@ -1,4 +1,4 @@
-	# -*- coding: utf-8 -*-
+# -*- coding: utf-8 -*-
 # Copyright (c) 2015, Frappe Technologies and contributors
 # For license information, please see license.txt
 

erpnext/education/doctype/grading_scale/grading_scale_dashboard.py

@@ -1,4 +1,3 @@
-
 from frappe import _
 
 

erpnext/education/doctype/program_enrollment/program_enrollment_dashboard.py

@@ -1,4 +1,3 @@
-
 from frappe import _
 
 

erpnext/education/doctype/student/student_dashboard.py

@@ -1,4 +1,3 @@
-
 from frappe import _
 
 

erpnext/education/doctype/student_applicant/student_applicant.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-777777yyy
 # Copyright (c) 2015, Frappe Technologies and contributors
 # For license information, please see license.txt
 

erpnext/education/doctype/student_attendance/student_attendance_dashboard.py

@@ -1,4 +1,3 @@
-
 from frappe import _
 
 

erpnext/education/doctype/student_category/student_category_dashboard.py

@@ -1,4 +1,3 @@
-
 from frappe import _
 
 

erpnext/education/doctype/student_leave_application/student_leave_application_dashboard.py

@@ -1,5 +1,3 @@
-
-
 def get_data():
 	return {
 		'fieldname': 'leave_application',

erpnext/education/web_form/student_applicant/student_applicant.py

@@ -1,5 +1,3 @@
-
-
 def get_context(context):
 	# do your magic here
 	pass