diff --git a/examples/fokker-planck/fokker-planck-relaxation-slowing-down-beam.toml b/examples/fokker-planck/fokker-planck-relaxation-slowing-down-beam.toml
deleted file mode 100644
index 9f0a16f23..000000000
--- a/examples/fokker-planck/fokker-planck-relaxation-slowing-down-beam.toml
+++ /dev/null
@@ -1,71 +0,0 @@
-# cheap input file for a 0D2V relaxation to a collisional Maxwellian distribution with self-ion collisions.
-n_ion_species = 1
-n_neutral_species = 0
-electron_physics = "boltzmann_electron_response"
-evolve_moments_density = false
-evolve_moments_parallel_flow = false
-evolve_moments_parallel_pressure = false
-evolve_moments_conservation = false
-T_e = 1.0
-T_wall = 1.0
-initial_density1 = 0.5
-initial_temperature1 = 1.0
-initial_density2 = 0.5
-initial_temperature2 = 1.0
-z_IC_option1 = "sinusoid"
-z_IC_density_amplitude1 = 0.001
-z_IC_density_phase1 = 0.0
-z_IC_upar_amplitude1 = 0.0
-z_IC_upar_phase1 = 0.0
-z_IC_temperature_amplitude1 = 0.0
-z_IC_temperature_phase1 = 0.0
-z_IC_option2 = "sinusoid"
-z_IC_density_amplitude2 = 0.001
-z_IC_density_phase2 = 0.0
-z_IC_upar_amplitude2 = 0.0
-z_IC_upar_phase2 = 0.0
-z_IC_temperature_amplitude2 = 0.0
-z_IC_temperature_phase2 = 0.0
-vpa_IC_option1 = "isotropic-beam"
-#vpa_IC_option1 = "directed-beam"
-#vpa_IC_v01 = 
-#vpa_IC_vth0 =
-#vpa_IC_vpa0 =
-#vpa_IC_vperp0 =
-charge_exchange_frequency = 0.0
-ionization_frequency = 0.0
-constant_ionization_rate = false
-z_ngrid = 1
-z_nelement = 1
-z_nelement_local = 1
-z_bc = "wall"
-z_discretization = "chebyshev_pseudospectral"
-r_ngrid = 1
-r_nelement = 1
-r_nelement_local = 1
-r_bc = "periodic"
-r_discretization = "chebyshev_pseudospectral"
-vpa_ngrid = 5
-vpa_nelement = 32
-vpa_L = 6.0
-vpa_bc = "zero"
-vpa_discretization = "gausslegendre_pseudospectral"
-vperp_ngrid = 5
-vperp_nelement = 16
-vperp_L = 3.0
-vperp_discretization = "gausslegendre_pseudospectral"
-# Fokker-Planck operator requires the "gausslegendre_pseudospectral
-# options for the vpa and vperp grids
-
-[fokker_planck_collisions]
-# nuii sets the normalised input C[F,F] Fokker-Planck collision frequency
-nuii = 1.0
-slowing_down_test = true
-frequency_option = "manual"
-use_fokker_planck = true
-
-[timestepping]
-nstep = 1000
-dt = 1.0e-5
-nwrite = 50
-nwrite_dfns = 50
diff --git a/plots_post_processing/plots_post_processing/src/plots_post_processing.jl b/plots_post_processing/plots_post_processing/src/plots_post_processing.jl
index 8fdb8fd81..fe606a6cf 100644
--- a/plots_post_processing/plots_post_processing/src/plots_post_processing.jl
+++ b/plots_post_processing/plots_post_processing/src/plots_post_processing.jl
@@ -60,7 +60,7 @@ using moment_kinetics.manufactured_solns: manufactured_solutions,
                                           manufactured_geometry
 using moment_kinetics.moment_kinetics_input: mk_input, get, get_default_rhostar
 using moment_kinetics.input_structs: geometry_input, grid_input, species_composition
-using moment_kinetics.input_structs: electron_physics_type, boltzmann_electron_response,
+using moment_kinetics.input_structs: boltzmann_electron_response, #electron_physics_type,
                                      boltzmann_electron_response_with_simple_sheath
 using moment_kinetics.reference_parameters
 using moment_kinetics.geo: init_magnetic_geometry