tests: Replace umodule with module everywhere.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

tests/basics/struct2.py

@@ -1,13 +1,10 @@
-# test ustruct with a count specified before the type
+# test struct with a count specified before the type
 
 try:
-    import ustruct as struct
-except:
-    try:
-        import struct
-    except ImportError:
-        print("SKIP")
-        raise SystemExit
+    import struct
+except ImportError:
+    print("SKIP")
+    raise SystemExit
 
 print(struct.calcsize('0s'))
 print(struct.unpack('0s', b''))