Remove use of @Verifies and @verifies

Going forward we are discouraging new contributions from using the old styles for the following reasons:

• it violates Test Driven Development since the plugin forces you to write the should annotation sentence (of what you want to test) in an existing interface or a concrete class and not the test class. This means you have to write code before writing a test. Writing tests first naturally leads to code that is easy to test.
• the plugin is not maintained and was not always working (URL needed to install it was broken, might not work on all IDE versions/types). This style is repeating the same sentence in 3 places (AT should on interface or class, AT verifies in javadoc, method name in the test class) in slightly different styles which without the plugin is a waste of precious time. We do want developers to contribute their time and solve problems and not get carpal tunnel syndrome (wink)
• the OpenMRS core on Github and also modules are integrated with the continuous integration provider Travis CI so that whenever a new contribution of code comes in as a pull request the tests are run and a test coverage report is sent back to Github (via coveralls.io). So we know if your contribution is well tested