Removing explicit references to rgdal and rgeoss

[codecov-commenter]

Codecov Report

Base: 0.00% // Head: 0.00% // No change to project coverage :thumbsup:

Coverage data is based on head (6cb67d5) compared to base (4e4f8ae). Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #31 +/- ## ====================================== Coverage 0.00% 0.00% ====================================== Files 1 1 Lines 690 690 ====================================== Misses 690 690 ``` | [Impacted Files](https://codecov.io/gh/waternumbers/dynatopGIS/pull/31?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Smith) | Coverage Δ | | |---|---|---| | [R/dygis.R](https://codecov.io/gh/waternumbers/dynatopGIS/pull/31/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Smith#diff-Ui9keWdpcy5S) | `0.00% <0.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Smith). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Smith)

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