Remove useless additional requirement file

amqp1 requirements doesn't need anymore to be in
a separate file.

Change-Id: If8de5bcac231052ebf93323bf3923ab942a0de17

amqp1-requirements.txt

@@ -1,3 +0,0 @@
-# AMQP 1.0 support depends on the Qpid Proton AMQP 1.0
-# development libraries.
-pyngus>=1.3.1;python_version=='2.7'  # Apache-2.0

test-requirements.txt

@@ -32,3 +32,7 @@ coverage>=3.6
 # this is required for the docs build jobs
 sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2
 oslosphinx>=2.5.0 # Apache-2.0
+
+# AMQP 1.0 support depends on the Qpid Proton AMQP 1.0
+# development libraries.
+pyngus>=1.3.1;python_version=='2.7'  # Apache 2.0 License

tox.ini

@@ -7,7 +7,6 @@ setenv =
     OS_TEST_TIMEOUT=30
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-       -r{toxinidir}/amqp1-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:pep8]