Get rid of NLDI import (#191)

* remove nldi from init.py because it has an optional dependency

* adjust python versions tested

Author: ehinman

.github/workflows/python-package.yml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: [3.9, '3.10', 3.11, 3.12, 3.13]
+        python-version: [3.9, 3.13, 3.14]
 
     steps:
       - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871

dataretrieval/__init__.py

@@ -6,7 +6,6 @@
     __version__ = "version-unknown"
 
 from dataretrieval.nadp import *
-from dataretrieval.nldi import *
 from dataretrieval.nwis import *
 from dataretrieval.samples import *
 from dataretrieval.streamstats import *