[IMP] account_asset: Remove demo data

Purpose
=======

As there's no 'xfa_account_id' configured on the module installation, the demo data are not created.

Specification
=============

Remove them.

addons/account_asset/__manifest__.py

@@ -14,9 +14,6 @@ Keeps track of depreciations, and creates corresponding journal entries.
     'website': 'https://www.odoo.com/page/accounting',
     'category': 'Accounting',
     'sequence': 32,
-    'demo': [
-        'data/account_asset_demo.yml',
-    ],
     'data': [
         'security/account_asset_security.xml',
         'security/ir.model.access.csv',

addons/account_asset/data/account_asset_demo.yml

--
-    Creating demo data that require looking for accounts
--
-    !python {model: ir.model.data, id: False} : |
-        company = self.env.user.company_id
-        journal_id = self.env['account.journal'].search([('type', '=', 'general'), ('id', '!=', company.currency_exchange_journal_id.id)], limit=1).id
-        expense_account_id = self.env['account.account'].search([('user_type_id', '=', ref('account.data_account_type_expenses'))], limit=1).id
-        xfa_account_id = self.env['account.account'].search([('user_type_id', '=', ref('account.data_account_type_fixed_assets'))], limit=1).id
-        if not xfa_account_id:
-            xfa_account_id = self.env['account.account'].search([('user_type_id', '=', ref('account.data_account_type_current_assets'))], limit=1).id
-        from datetime import datetime, timedelta
-        import time
-        if xfa_account_id and expense_account_id and journal_id:
-            vals = {
-                'journal_id': journal_id,
-                'name': 'Hardware - 3 Years',
-                'method_number': 3,
-                'account_asset_id': xfa_account_id,
-                'account_depreciation_id': xfa_account_id,
-                'account_depreciation_expense_id': expense_account_id,
-            }
-            self._update('account.asset.category', 'account_asset', vals, 'account_asset_category_fixedassets0')
-            vals = {
-                'journal_id': journal_id,
-                'name': 'Cars - 5 Years',
-                'method_number': 5,
-                'account_asset_id': xfa_account_id,
-                'account_depreciation_id': xfa_account_id,
-                'account_depreciation_expense_id': expense_account_id,
-            }
-            self._update('account.asset.category', 'account_asset', vals, 'account_asset_category_fixedassets1')
-            vals = {
-                'salvage_value': 2000.0,
-                'state': 'open',
-                'method_period': 12,
-                'method_number': 5,
-                'name': "CEO's car",
-                'value': 12000.0,
-                'category_id': ref('account_asset_category_fixedassets0'),
-            }
-            self._update('account.asset.asset', 'account_asset', vals, 'account_asset_asset_vehicles0')
-            vals = {
-                'method_end': (datetime.now().replace(month=8, day=11) + timedelta(days=3*365)).strftime('%Y-%m-%d'),
-                'salvage_value': 0.0,
-                'method_time': 'end',
-                'name': 'V6 Engine and 10 inches tires',
-                'value': 2800.0,
-                'category_id': ref('account_asset_category_fixedassets0'),
-            }
-            self._update('account.asset.asset', 'account_asset', vals, 'account_asset_asset_cab0')
-            vals = {
-                'prorata': 1,
-                'salvage_value': 100000.0,
-                'state': 'open',
-                'method_period': 12,
-                'method_number': 20,
-                'date': time.strftime('%Y-01-01'),
-                'name': 'Office',
-                'value': 500000.0,
-                'category_id': ref('account_asset_category_fixedassets0'),
-            }
-            self._update('account.asset.asset', 'account_asset', vals, 'account_asset_asset_office0')