Use https link to download syutil as not everyone has ssh access to github.

setup.py

@@ -41,11 +41,12 @@ setup(
         "py-bcrypt",
     ],
     dependency_links=[
-        "git+ssh://git@github.com/matrix-org/syutil.git#egg=syutil-0.0.2",
+        "https://github.com/matrix-org/syutil/tarball/master#egg=syutil-0.0.2",
     ],
     setup_requires=[
         "setuptools_trial",
-        "setuptools>=1.0.0", # Needs setuptools that supports git+ssh. It's not obvious when support for this was introduced.
+        "setuptools>=1.0.0", # Needs setuptools that supports git+ssh.
+                             # TODO: Do we need this now? we don't use git+ssh.
         "mock"
     ],
     include_package_data=True,