fix: remove int_comp from rayleigh_taylor_muscl example (incompatible with viscous)

Author: sbryngelson

examples/3D_rayleigh_taylor_muscl/case.py

@@ -57,7 +57,6 @@
     "recon_type": 2,
     "muscl_order": 2,
     "muscl_lim": 4,
-    "int_comp": 1,
     "avg_state": 2,
     "riemann_solver": 2,
     "wave_speeds": 1,