FDS Verification: Remove TUNNEL_PRECON

Author: mcgratta

Verification/Pressure_Solver/tunnel_demo_glmat.fds

@@ -3,7 +3,7 @@
 &MESH IJK=80,20,20, XB=0.0,16.0,-2.0,2.0,0.0,4.0, MULT_ID='mesh' /
 &MULT ID='mesh', DX=16., I_UPPER=7 /
 &MISC GVEC=-1.70,0.0,-9.65 /
-&PRES CHECK_POISSON=T, SOLVER='GLMAT', TUNNEL_PRECONDITIONER=T /
+&PRES CHECK_POISSON=T, SOLVER='GLMAT' /
 &DUMP FLUSH_FILE_BUFFERS=T, VELOCITY_ERROR_FILE=.TRUE. /
 &REAC FUEL='PROPANE', SOOT_YIELD=0.015 /
 &SURF ID='fire', COLOR='RED', HRRPUA=2000.0 /