[REM] 4-spaces indent for web view pretty-print-before-save routine

Didn't quite work right: on the layout, it would exponentially increase
leading spaces in text nodes. Combined with a bug injecting snippets marks in
the footer (and thus invalidating and re-saving the layout at each snippet
addition) this could blow up the layout template and rendered page to >20MB.

Just keep lxml's standard 2-spaces indent.

LXML is unable to pretty print the layout anyway.

bzr revid: xmo@openerp.com-20140321075419-9w88h232r928xv5f

addons/website/models/ir_ui_view.py

@@ -168,20 +168,9 @@ class view(osv.osv):
         arch_no_whitespace = etree.fromstring(
             etree.tostring(arch, encoding='utf-8'),
             parser=etree.XMLParser(encoding='utf-8', remove_blank_text=True))
-        arch_pretty_indent_2 = etree.tostring(
+        return etree.tostring(
             arch_no_whitespace, encoding='unicode', pretty_print=True)
 
-        # pretty_print uses a fixed indent level of 2, we want an indent of 4,
-        # double up leading spaces.
-        def repl(m):
-            indent = len(m.group(0)) / 2
-            return u' ' * 4 * indent
-        # FIXME: If py2.7 only, can use re.M in sub and don't have to do replacement line by line
-        return u'\n'.join(
-            re.sub(ur'^((?:  )+)', repl, line)
-            for line in arch_pretty_indent_2.split(u'\n')
-        )
-
     def save(self, cr, uid, res_id, value, xpath=None, context=None):
         """ Update a view section. The view section may embed fields to write