[FIX] report: datetime already imported, differently

This rev. is related to 439cdb6871.

The module datetime was already available in the reports,
and it was the entire datetime module that was imported,
not just the class.

This rev. is not recompatible with 439cdb6871,
but there is no other choice, since other existing
reports might already expected the datetime module
and not the class

opw-640299

addons/report/models/report.py

@@ -38,7 +38,6 @@ import lxml.html
 import os
 import subprocess
 from contextlib import closing
-from datetime import datetime
 from distutils.version import LooseVersion
 from functools import partial
 from pyPdf import PdfFileWriter, PdfFileReader
@@ -143,7 +142,6 @@ class Report(osv.Model):
                 context = dict(context, translatable=context.get('lang') != request.website.default_lang_code)
         values.update(
             time=time,
-            datetime=datetime,
             context_timestamp=lambda t: fields.datetime.context_timestamp(cr, uid, t, context),
             translate_doc=translate_doc,
             editable=True,

addons/report/views/layouts.xml

@@ -123,7 +123,7 @@
     <div class="header">
         <div class="row">
             <div class="col-xs-3">
-                <span t-esc="context_timestamp(datetime.now()).strftime('%Y-%m-%d %H:%M')"/>
+                <span t-esc="context_timestamp(datetime.datetime.now()).strftime('%Y-%m-%d %H:%M')"/>
             </div>
             <div class="col-xs-2 col-xs-offset-2 text-center">
                 <span t-esc="company.name"/>