Tests: fix incorrect check for hidden dir

Copy-pasted mistake in tests and tools.

tests/python/batch_import.py

@@ -72,10 +72,8 @@ def batch_import(
 
     def file_generator(path):
         for dirpath, dirnames, filenames in os.walk(path):
-
-            # skip '.svn'
-            if dirpath.startswith("."):
-                continue
+            # skip '.git'
+            dirnames[:] = [d for d in dirnames if not d.startswith(".")]
 
             for filename in filenames:
                 if pattern_match(filename):

tests/python/bl_load_py_modules.py

@@ -93,9 +93,8 @@ def addon_modules_sorted():
 def source_list(path, filename_check=None):
     from os.path import join
     for dirpath, dirnames, filenames in os.walk(path):
-        # skip '.svn'
-        if dirpath.startswith("."):
-            continue
+        # skip '.git'
+        dirnames[:] = [d for d in dirnames if not d.startswith(".")]
 
         for filename in filenames:
             filepath = join(dirpath, filename)

tests/python/bl_run_operators.py

@@ -100,10 +100,8 @@ def blend_list(mainpath):
 
     def file_list(path, filename_check=None):
         for dirpath, dirnames, filenames in os.walk(path):
-
-            # skip '.svn'
-            if dirpath.startswith("."):
-                continue
+            # skip '.git'
+            dirnames[:] = [d for d in dirnames if not d.startswith(".")]
 
             for filename in filenames:
                 filepath = join(dirpath, filename)