remove some unused code from utils.py

subiquitycore/signals.py

@@ -29,7 +29,6 @@ class SignalException(Exception):
 class Signal:
     known_signals = []
     signal_stack = []
-    default_signal = None
 
     def register_signals(self, signals):
         if type(signals) is list:

subiquitycore/utils.py

@@ -148,32 +148,6 @@ def run_command(command, timeout=None, shell=False):
     return run_command_summarize(p, stdout, stderr)
 
 
-def sys_dev_path(devname, path=""):
-    return SYS_CLASS_NET + devname + "/" + path
-
-
-def read_sys_net(devname, path, translate=None, enoent=None, keyerror=None):
-    try:
-        contents = ""
-        with open(sys_dev_path(devname, path), "r") as fp:
-            contents = fp.read().strip()
-        if translate is None:
-            return contents
-
-        try:
-            return translate.get(contents)
-        except KeyError:
-            log.debug("found unexpected value '%s' in '%s/%s'", contents,
-                      devname, path)
-            if keyerror is not None:
-                return keyerror
-            raise
-    except OSError as e:
-        if e.errno == errno.ENOENT and enoent is not None:
-            return enoent
-        raise
-
-
 # FIXME: replace with passlib and update package deps
 def crypt_password(passwd, algo='SHA-512'):
     # encryption algo - id pairs for crypt()
@@ -190,24 +164,6 @@ def crypt_password(passwd, algo='SHA-512'):
     return crypt.crypt(passwd, algos[algo] + salt)
 
 
-def is_root():
-    """ Returns root or if sudo user exists
-    """
-    euid = os.geteuid()
-
-    log.debug('is_root: euid={}'.format(euid))
-    if euid != 0:
-        return False
-    return True
-
-
-def sudo_user():
-    """ Returns the value of env['SUDO_USER']
-    """
-    sudo_user = os.getenv('SUDO_USER', None)
-    return sudo_user
-
-
 def disable_first_boot_service():
     """ Stop firstboot service; which also restores getty service """
     log.info('disabling first boot service')