remove extra escape characters from BNS prior

bilby/gw/prior_files/binary_neutron_stars.prior

@@ -9,8 +9,8 @@ mass_ratio = Constraint(name='mass_ratio', minimum=0.125, maximum=1)
 # total_mass = Uniform(name='total_mass', minimum=2, maximum=4, unit='$M_{\odot}$', boundary=None)
 # mass_ratio = Uniform(name='mass_ratio', minimum=0.5, maximum=1, boundary=None)
 # symmetric_mass_ratio = Uniform(name='symmetric_mass_ratio', minimum=0.22, maximum=0.25, boundary=None)
-chi_1 = bilby.gw.prior.AlignedSpin(a_prior=Uniform(0, 0.05), z_prior=Uniform(-1, 1), name='chi_1', latex_label='$\\chi_1$', boundary='reflective')
-chi_2 = bilby.gw.prior.AlignedSpin(a_prior=Uniform(0, 0.05), z_prior=Uniform(-1, 1), name='chi_2', latex_label='$\\chi_2$', boundary='reflective')
+chi_1 = bilby.gw.prior.AlignedSpin(a_prior=Uniform(0, 0.05), z_prior=Uniform(-1, 1), name='chi_1', latex_label='$\chi_1$', boundary='reflective')
+chi_2 = bilby.gw.prior.AlignedSpin(a_prior=Uniform(0, 0.05), z_prior=Uniform(-1, 1), name='chi_2', latex_label='$\chi_2$', boundary='reflective')
 luminosity_distance = bilby.gw.prior.UniformSourceFrame(name='luminosity_distance', minimum=10, maximum=500, unit='Mpc', boundary=None)
 dec = Cosine(name='dec', boundary='reflective')
 ra = Uniform(name='ra', minimum=0, maximum=2 * np.pi, boundary='periodic')