Initializing help system before first use

# problem.removecbmessage

Purpose
This subroutine is deprecated and will be removed in a future release. Use problem.removeMessageCallback instead.
Removes a message callback function previously added by addcbmessage. The specified callback function will no longer be called after it has been removed.
Synopsis
`problem.removecbmessage(callback, data)`
Arguments

callback | The callback function to remove. If None then all message callback functions added with the given user-defined object value will be removed.
data | The object value that the callback was added with. If None, then the object value will not be checked and all message callbacks with the function callback will be removed.

Further information
By default, Optimizer messages are also printed to stdout. This behaviour is unaffected by user message callbacks. It can be disabled by calling problem.setOutputEnabled or xpress.setOutputEnabled with argument False.
Related topics
problem.addMessageCallback, problem.setOutputEnabled, xpress.setOutputEnabled, problem.removeMessageCallback.
Parent Topic Deprecated functionality

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