Removed PostGres from code and documentation

We don't support postgres.

Change-Id: Ia51300c1aa1042ae32f966490ce4265d49fab255

doc/source/install/manual.rst

@@ -16,15 +16,11 @@ Installing the API service
      $ pip install storyboard
 
 2. By default Storyboard will use SQLite driver which is suitable only for
-   development mode. Storyboard supports MySQL and PostgreSQL backends.
-   To install MySQL driver execute::
+   development mode. Storyboard only supports MySQL, to install MySQL driver
+   execute::
 
      $ pip install MySQL-python
 
-   To install PostgreSQL driver execute::
-
-     $ pip install psycopg2
-
 3. Edit ``/etc/storyboard/storyboard.conf``. You'll need to modify ``connection``
    parameter in the ``[database]`` section.
 

storyboard/tests/db/migration/test_migrations.conf

@@ -7,7 +7,6 @@
 #sqlite=sqlite://
 #sqlitefile=sqlite:///test_migrations_utils.db
 mysql=mysql+mysqldb://storyboard:storyboard@localhost/test_migrations_utils
-#postgresql=postgresql+psycopg2://user:pass@localhost/test_migrations_utils
 
 [migration_dbs]
 # Migration DB details are listed separately as they can't be connected to
@@ -19,7 +18,6 @@ mysql=mysql+mysqldb://storyboard:storyboard@localhost/test_migrations_utils
 #sqlite=sqlite://
 #sqlitefile=sqlite:///test_migrations.db
 #mysql=mysql+mysqldb://user:pass@localhost/test_migrations
-#postgresql=postgresql+psycopg2://user:pass@localhost/test_migrations
 
 [walk_style]
 snake_walk=yes

storyboard/tests/db/migration/test_migrations_base.py

@@ -51,9 +51,7 @@ def _get_connect_string(backend, user, passwd, database):
     these then we'll run the tests, otherwise they are skipped
     """
 
-    if backend == "postgres":
-        backend = "postgresql+psycopg2"
-    elif backend == "mysql":
+    if backend == "mysql":
         backend = "mysql+mysqldb"
     else:
         raise Exception("Unrecognized backend: '%s'" % backend)

test-requirements.txt

@@ -14,7 +14,6 @@ posix_ipc>=0.9.8
 
 # Some of the tests use real MySQL and Postgres databases
 MySQL-python
-psycopg2
 
 # Doc requirements
 sphinx>=1.1.2,<1.2