[unittests] Skip import of tvm.micro if micro-TVM was not enabled (#9301)

Author: Krzysztof Parzyszek

tests/python/unittest/test_crt.py

@@ -35,6 +35,7 @@
 from tvm.topi.utils import get_const_tuple
 from tvm.topi.testing import conv2d_nchw_python
 
+pytest.importorskip("tvm.micro.testing")
 from tvm.micro.testing import check_tune_log
 
 BUILD = True

tests/python/unittest/test_micro_project_api.py

@@ -25,6 +25,8 @@
 import pytest
 
 import tvm
+
+pytest.importorskip("tvm.micro")
 from tvm.micro import project_api