Remove vtkChartsCore dependency.

vtkPVServerManagerCore cannot depend on vtkChartsCore. The dependency
was added for state file backwards compatibility. Removing that
dependency by avoiding the use of the vtkAxis::Location enum.

Change-Id: I2ee437df6e2462483a12355ad3e04c6ec07dd2cd
Merge topic 'lookup_table_cleanup' into next

1980e12f Remove vtkChartsCore dependency.