Update location of import_utils from common to internals for Fo…

…rest notebook (rapidsai#5171)

Closes rapidsai#5172

Authors:
  - Taurean Dyer (https://github.com/taureandyernv)

Approvers:
  - Dante Gama Dessavre (https://github.com/dantegd)

URL: rapidsai#5171

notebooks/forest_inference_demo.ipynb

@@ -24,7 +24,7 @@
     "import os\n",
     "\n",
     "from cuml.testing.utils import array_equal\n",
-    "from cuml.common.import_utils import has_xgboost\n",
+    "from cuml.internals.import_utils import has_xgboost\n",
     "\n",
     "from cuml.datasets import make_classification\n",
     "from cuml.metrics import accuracy_score\n",