Remove uwsgi from application dependencies

uwsgi is installed by default using other means in the virtualenv
used by junction. There is no need to install uwsgi through the
application dependencies.

The support for uwsgi is flaky at best on Windows and works with
very limited functionality. Hence, this breaks development velocity
for people developing Junction on Windows.

Ref: #651

Signed-off-by: Nabarun Pal <pal.nabarun95@gmail.com>

requirements.txt

@@ -51,10 +51,6 @@ mdx-linkify==0.6
 Markdown==2.6.6
 markdown2==2.3.1
 
-# Server
-# ------------------------------------------------
-uwsgi==2.0.*
-
 # Device
 # ------------------------------------------------
 django-uuidfield==0.5.0