Kill some comments

src/one-body-sample.parset

@@ -55,23 +55,3 @@ V0 = 1
 L = 1e-5
 initial_log_state = -10
 state_model = Dieterich
-
-# The second-order a and b terms in [..] are very important in
-# determining whether sliding is stable or unstable and (in appli-
-# cation to the Earth) whether an earthquake or stable creep
-# occurs. From [..], velocity strengthening and thus stable creep
-# occurs when a is greater than b.  If b > a, instability can occur
-# unless the "spring" supplying stress to the fault or sample is too
-# stiff
-# -- Norman H.  Sleep:
-# Application of a unified rate and state friction theory to the
-# mechanics of fault zones with strain localization
-
-# If a > b, the overall change of f is positive, the friction is
-# velocity-strengthening, and only stable sliding is possible. On the
-# other hand, if a < b, the overall change is negative, the friction
-# is velocity-weakening, and dynamic instabilities can occur (e.g.,
-# Ruina, 1983). The situation a < b provides a necessary but not a
-# sufficient condition for instability.
-# -- Yehuda Ben-Zion:
-# Dynamic ruptures in recent models of earthquake faults