docs: drop empty Changelog in the documentation

Changelog.rst is empty and just refer to the Mercurial logs. More readable
release notes and other meta information is also available on the web site and
in announcement mails.

docs/index.rst

@@ -55,7 +55,6 b' Kallithea Documentation'
    contributing
    dev/translation
    dev/dbmigrations
-   changelog
 
 **API**
 

scripts/manifest

@@ -23,7 +23,6 b' docs/Makefile'
 docs/api/
 docs/api/api.rst
 docs/api/models.rst
-docs/changelog.rst
 docs/conf.py
 docs/contributing.rst
 docs/images/

setup.py

@@ -97,15 +97,12 b" keywords = ' '.join(["
 
 # long description
 README_FILE = 'README.rst'
-CHANGELOG_FILE = 'docs/changelog.rst'
 try:
-    long_description = open(README_FILE).read() + '\n\n' + \
-        open(CHANGELOG_FILE).read()
-
+    long_description = open(README_FILE).read()
 except IOError as err:
     sys.stderr.write(
-        "[WARNING] Cannot find file specified as long_description (%s)\n or "
-        "changelog (%s) skipping that file" % (README_FILE, CHANGELOG_FILE)
+        "[WARNING] Cannot find file specified as long_description (%s)\n"
+        % README_FILE
     )
     long_description = description