Remove obsolete code in DEBUG_MEM* sections

[dschlaep]

• close #369

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (2c5900d) 73.93% compared to head (1bec52e) 73.93%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## release/devel_v7.2.0 #371 +/- ## ===================================================== Coverage 73.93% 73.93% ===================================================== Files 21 21 Lines 4937 4937 ===================================================== Hits 3650 3650 Misses 1287 1287 ``` | [Files Changed](https://app.codecov.io/gh/DrylandEcology/SOILWAT2/pull/371?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DrylandEcology) | Coverage Δ | | |---|---|---| | [src/SW\_Control.c](https://app.codecov.io/gh/DrylandEcology/SOILWAT2/pull/371?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DrylandEcology#diff-c3JjL1NXX0NvbnRyb2wuYw==) | `95.34% <ø> (ø)` | | | [src/SW\_Files.c](https://app.codecov.io/gh/DrylandEcology/SOILWAT2/pull/371?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DrylandEcology#diff-c3JjL1NXX0ZpbGVzLmM=) | `88.11% <ø> (ø)` | | | [src/SW\_Markov.c](https://app.codecov.io/gh/DrylandEcology/SOILWAT2/pull/371?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DrylandEcology#diff-c3JjL1NXX01hcmtvdi5j) | `78.37% <ø> (ø)` | | | [src/SW\_Site.c](https://app.codecov.io/gh/DrylandEcology/SOILWAT2/pull/371?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DrylandEcology#diff-c3JjL1NXX1NpdGUuYw==) | `74.57% <ø> (ø)` | | | [src/SW\_SoilWater.c](https://app.codecov.io/gh/DrylandEcology/SOILWAT2/pull/371?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DrylandEcology#diff-c3JjL1NXX1NvaWxXYXRlci5j) | `62.70% <ø> (ø)` | | | [src/SW\_Weather.c](https://app.codecov.io/gh/DrylandEcology/SOILWAT2/pull/371?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DrylandEcology#diff-c3JjL1NXX1dlYXRoZXIuYw==) | `83.40% <ø> (ø)` | | | [src/mymemory.c](https://app.codecov.io/gh/DrylandEcology/SOILWAT2/pull/371?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DrylandEcology#diff-c3JjL215bWVtb3J5LmM=) | `84.61% <ø> (ø)` | |

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