Removed all code regarding scipy.optimize fmin_cg and fmin_ncg.
This problem should soon be able to be solved with minfx.
task #7822(https://gna.org/task/index.php?7822): Implement user function to estimate R2eff and associated errors for exponential curve fitting.
Authored by: tlinnet 2014-08-26
Parent: [r25286]
Child: [r25288]
