bitbake: toaster: modified setLayers API

Removed updating of bblayers.conf. It will be done in runBuild method.
Changed return value: return list of layers.
Removed _updateBBLayers method.

(Bitbake rev: 198bf7e6b8d7f847f2619b71c6bd86a9a76156c9)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/bldcontrol/bbcontroller.py

@@ -109,24 +109,6 @@ class BuildEnvironmentController(object):
         self.be = be
         self.connection = None
 
-    @staticmethod
-    def _updateBBLayers(bblayerconf, layerlist):
-        conflines = open(bblayerconf, "r").readlines()
-
-        bblayerconffile = open(bblayerconf, "w")
-        skip = 0
-        for i in xrange(len(conflines)):
-            if skip > 0:
-                skip =- 1
-                continue
-            if conflines[i].startswith("# line added by toaster"):
-                skip = 1
-            else:
-                bblayerconffile.write(conflines[i])
-
-        bblayerconffile.write("# line added by toaster build control\nBBLAYERS = \"" + " ".join(layerlist) + "\"")
-        bblayerconffile.close()
-
     def setLayers(self, bitbake, ls):
         """ Checks-out bitbake executor and layers from git repositories.
             Sets the layer variables in the config file, after validating local layer paths.