Revert "component/defaults: fix python path for theia case"

This reverts commit 608f48f0914d7ac3d1adbee2593b9fcf069ff7a4.

component/defaults.cfg

@@ -21,7 +21,7 @@ update =
   import os
   path, os.environ['PYTHON'] = os.path.split(options['executable'])
   PATH = os.environ['PATH']
-  if path != PATH.split(os.pathsep)[0]:
+  if path not in PATH.split(os.pathsep):
     os.environ['PATH'] = path + os.pathsep + PATH
 depends = ${gcc:recipe}