patman: Avoid changing the order of tags

patman collects tags that it sees in the commit and places them nicely
sorted at the end of the patch. However, this is not really necessary and
in fact is apparently not desirable.

Suggested-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/tools/patman/patchstream.py b/tools/patman/patchstream.py
index 322374c..b0b8153 100644
--- a/tools/patman/patchstream.py
+++ b/tools/patman/patchstream.py
@@ -72,7 +72,6 @@
         self.in_change = 0               # Non-zero if we are in a change list
         self.blank_count = 0             # Number of blank lines stored up
         self.state = STATE_MSG_HEADER    # What state are we in?
-        self.tags = []                   # Tags collected, like Tested-by...
         self.signoff = []                # Contents of signoff line
         self.commit = None               # Current commit
 
@@ -113,16 +112,6 @@
             self.series.AddCommit(self.commit)
             self.commit = None
 
-    def FormatTags(self, tags):
-        out_list = []
-        for tag in sorted(tags):
-            if tag.startswith('Cc:'):
-                tag_list = tag[4:].split(',')
-                out_list += gitutil.BuildEmailList(tag_list, 'Cc:')
-            else:
-                out_list.append(tag)
-        return out_list
-
     def ProcessLine(self, line):
         """Process a single line of a patch file or commit log
 
@@ -271,7 +260,7 @@
             elif tag_match.group(1) == 'Patch-cc':
                 self.commit.AddCc(tag_match.group(2).split(','))
             else:
-                self.tags.append(line);
+                out = [line]
 
         # Suppress duplicate signoffs
         elif signoff_match:
@@ -311,7 +300,6 @@
                 # Output the tags (signeoff first), then change list
                 out = []
                 log = self.series.MakeChangeLog(self.commit)
-                out += self.FormatTags(self.tags)
                 out += [line]
                 if self.commit:
                     out += self.commit.notes