code cleaning #235

Job	Run time
Check file changes	20s
Test on Mac	7m 56s
Test on ubuntu-latest	2m 23s
Test Intel on ubuntu-20.04	23m 57s
Test on ubuntu-20.04	6m 27s
Test run example 1 - meshfem3D simple model	13m 43s
Test run example 4 - small adjoint	3m 39s
Test run example 0 - make tests	7m 3s
Test run example 3 - layered halfspace	4m 36s
Test run example 2 - fault tpv5	5m 37s
Test run example 5 - socal1D	3m 23s
Test run example 6 - socal1D 1d_socal	10m 19s
Test run example 10 - homogeneous halfspace	2m 53s
Test run example 12 - PML elastic	5m 54s
Test run example 11 - poroelastic	3m 49s
Test run example 13 - PML acoustic	6m 20s
Test run example 14 - waterlayered halfspace	3m 57s
Test run example 15 - tomographic model	2m 55s
Test run example 16 - cavity	2m 48s
Test run example 17 - sep bathymetry	2m 55s
Test run example 18 - socal1D hdf5 i/o	3m 34s
Test run example 19 - meshfem3D simple model w/ ADIOS2	6m 45s
Test run example 7 - socal1D 1d_prem	3m 19s
Test run example 8 - socal1D 1d_cascadia	3m 26s
Test run example 9 - coupling FK	3m 46s
	2h 21m 44s

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