Remove webapp2 (#393)

Author: c24t

README.rst

@@ -239,11 +239,10 @@ For Django, you can configure the blacklist in the ``OPENCENSUS_PARAMS`` in ``se
 Framework Integration
 ---------------------
 
-Census supports integration with popular web frameworks including
-Django, Flask, Pyramid, and Webapp2. When the application receives a HTTP request,
-the tracer will automatically generate a span context using the trace
-information extracted from the request headers and propagated to the
-child spans.
+Census supports integration with popular web frameworks including Django,
+Flask, and Pyramid. When the application receives a HTTP request, the tracer
+will automatically generate a span context using the trace information
+extracted from the request headers and propagated to the child spans.
 
 Flask
 ~~~~~

docs/trace/usage.rst

@@ -182,11 +182,10 @@ For Django, you can configure the blacklist in the ``OPENCENSUS_PARAMS`` in ``se
 Framework Integration
 ---------------------
 
-Census supports integration with popular web frameworks including
-Django, Flask, Pyramid, and Webapp2. When the application receives a HTTP request,
-the tracer will automatically generate a span context using the trace
-information extracted from the request headers, and propagated to the
-child spans.
+Census supports integration with popular web frameworks including Django,
+Flask, and Pyramid. When the application receives a HTTP request, the tracer
+will automatically generate a span context using the trace information
+extracted from the request headers, and propagated to the child spans.
 
 Flask
 ~~~~~

requirements-test.txt

@@ -12,7 +12,6 @@ pytest==3.2.2
 pytest-cov==2.5.1
 retrying==1.3.3
 SQLAlchemy==1.1.14
-webapp2==2.5.2
 WebOb==1.7.3
 wrapt==1.10.11
 thrift==0.10.0