Revert "Do not check root by uid in the cygwin when run slapformat"

This reverts commit 7581e55e.

slapos/format.py

@@ -1204,9 +1204,7 @@ class FormatConfig(object):
       self.checkRequiredBinary(['brctl'])
 
     # Check if root is needed
-    if sys.platform == 'cygwin':
-      root_needed = False
-    elif (self.alter_network or self.alter_user) and not self.dry_run:
+    if (self.alter_network or self.alter_user) and not self.dry_run:
       root_needed = True
     else:
       root_needed = False