Remove unused requirements

Remove requirements not directly used by the test code. These
requirements make it very difficult to determine what is actually a
dependency of the library.

dev-requirements.txt

@@ -0,0 +1,2 @@
+markment==0.2.14
+steadymark==0.4.5

requirements.txt

@@ -1,30 +1,9 @@
-bolacha==0.6.0
-couleur==0.5.0
 coverage==3.5.3
-cssselect==0.8
-distribute==0.6.30
-Flask==0.9
 httplib2==0.7.6
-ipdb==0.7
-ipython==0.13.1
-Jinja2==2.6
-lxml==3.1.2
-markment==0.2.14
-misaka==1.0.2
 mock==1.0.1
-multiprocessing==2.6.2.1
 nose==1.2.1
-py==1.4.12
-Pygments==1.6
-python-qt==0.50
-PyYAML==3.10
-redis==2.7.1
 requests==1.1.0
-speakers==0.0.3
-steadymark==0.4.5
 tornado==2.4
 tox==1.4.2
-virtualenv==1.8.2
-Werkzeug==0.9.1
 sure==1.2.2
 urllib3==1.7.1