devtool: drop unused plugin_init() functions

This function is no longer required to be defined for a plugin, so drop
it where it's a no-op.

(From OE-Core rev: 49716a5e27e704598321bd6c82275b16afc444aa)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/devtool/build.py

@@ -25,10 +25,6 @@ from devtool import exec_build_env_command, check_workspace_recipe, DevtoolError
 
 logger = logging.getLogger('devtool')
 
-def plugin_init(pluginlist):
-    """Plugin initialization"""
-    pass
-
 def _create_conf_file(values, conf_file=None):
     if not conf_file:
         fd, conf_file = tempfile.mkstemp(suffix='.conf')

scripts/lib/devtool/package.py

@@ -24,10 +24,6 @@ from devtool import exec_build_env_command, setup_tinfoil, check_workspace_recip
 
 logger = logging.getLogger('devtool')
 
-def plugin_init(pluginlist):
-    """Plugin initialization"""
-    pass
-
 def package(args, config, basepath, workspace):
     """Entry point for the devtool 'package' subcommand"""
     check_workspace_recipe(workspace, args.recipename)

scripts/lib/devtool/sdk.py

@@ -11,10 +11,6 @@ from devtool import exec_build_env_command, setup_tinfoil, DevtoolError
 
 logger = logging.getLogger('devtool')
 
-def plugin_init(pluginlist):
-    """Plugin initialization"""
-    pass
-
 def parse_locked_sigs(sigfile_path):
     """Return <pn:task>:<hash> dictionary"""
     sig_dict = {}

scripts/lib/devtool/upgrade.py

@@ -33,10 +33,6 @@ from devtool import exec_build_env_command, setup_tinfoil, DevtoolError, parse_r
 
 logger = logging.getLogger('devtool')
 
-def plugin_init(pluginlist):
-    """Plugin initialization"""
-    pass
-
 def _run(cmd, cwd=''):
     logger.debug("Running command %s> %s" % (cwd,cmd))
     return bb.process.run('%s' % cmd, cwd=cwd)

scripts/lib/recipetool/newappend.py

@@ -32,11 +32,6 @@ logger = logging.getLogger('recipetool')
 tinfoil = None
 
 
-def plugin_init(pluginlist):
-    # Don't need to do anything here right now, but plugins must have this function defined
-    pass
-
-
 def tinfoil_init(instance):
     global tinfoil
     tinfoil = instance