Delete obsolete code

assets/admin.py

@@ -1,4 +1,5 @@
 from django.contrib import admin
+from reversion.admin import VersionAdmin
 from assets import models as assets
 
 
@@ -15,13 +16,13 @@ class AssetStatusAdmin(admin.ModelAdmin):
 
 
 @admin.register(assets.Supplier)
-class SupplierAdmin(admin.ModelAdmin):
+class SupplierAdmin(VersionAdmin):
     list_display = ['id', 'name']
     ordering = ['id']
 
 
 @admin.register(assets.Asset)
-class AssetAdmin(admin.ModelAdmin):
+class AssetAdmin(VersionAdmin):
     list_display = ['id', 'asset_id', 'description', 'category', 'status']
     list_filter = ['is_cable', 'category']
     search_fields = ['id', 'asset_id', 'description']

assets/migrations/0012_remove_asset_next_sched_maint.py

@@ -0,0 +1,17 @@
+# Generated by Django 3.0.3 on 2020-03-18 00:24
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('assets', '0011_auto_20200317_2006'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='asset',
+            name='next_sched_maint',
+        ),
+    ]

assets/models.py

@@ -89,7 +89,6 @@ class Asset(models.Model, RevisionMixin):
     purchase_price = models.DecimalField(blank=True, null=True, decimal_places=2, max_digits=10)
     salvage_value = models.DecimalField(blank=True, null=True, decimal_places=2, max_digits=10)
     comments = models.TextField(blank=True)
-    next_sched_maint = models.DateField(blank=True, null=True)
 
     # Cable assets
     is_cable = models.BooleanField(default=False)