Fix static type checker error

Error message:
    error: Import "urlparse" could not be resolved
    (reportMissingImports)

tests/generate_urls.py

@@ -1,17 +1,8 @@
-from itertools import product
-
-try:
-    from urllib.parse import urljoin
-except ImportError:
-    from urlparse import urljoin
-
-try:
-    from urllib.parse import urlparse
-except ImportError:
-    from urlparse import urlparse
-
 import csv
 import posixpath
+from itertools import product
+from urllib.parse import urljoin
+from urllib.parse import urlparse
 
 
 def remove_dot_segments(url):

tests/generate_urls.sh

@@ -3,7 +3,7 @@ cd "${SCRIPT_DIR}"
 
 set -x
 
-python "generate_urls.py" &&
+python3 "generate_urls.py" &&
     ([[ -f "urls.csv.gz" ]] && rm --verbose "urls.csv.gz" || exit 0) &&
     gzip --verbose --best --no-name "urls.csv" &&
     gzip --verbose --test "urls.csv.gz" &&