Remove 'gender' column from existing migration and spec schema.

This column is not being dropped from existing databases to preserve existing data.

Author: rmparr

db/migrate/20131015124700_create_alchemy_users.rb

@@ -6,7 +6,6 @@ def up
       t.string   "lastname"
       t.string   "login"
       t.string   "email"
-      t.string   "gender"
       t.string   "language"
       t.string   "encrypted_password",     limit: 128, default: "",       null: false
       t.string   "password_salt",          limit: 128, default: "",       null: false

spec/dummy/db/schema.rb

@@ -276,7 +276,6 @@
     t.string "lastname"
     t.string "login"
     t.string "email"
-    t.string "gender"
     t.string "language"
     t.string "encrypted_password", limit: 128, default: "", null: false
     t.string "password_salt", limit: 128, default: "", null: false