base: Switch to use addpylib directive and BB_GLOBAL_PYMODULES

Since bitbake now supports an official method to inject python modules,
switch to it.

Anyone using OE_EXTRA_IMPORTS will need to adjust their code accordingly,
probably switching to their own module namespace.

Also switch to using BB_GLOBAL_PYMODULES to list the global modules
to import.

(From OE-Core rev: 1f56155e91da2030ee0a5e93037c62e1349ba89f)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes-global/base.bbclass

@@ -15,31 +15,8 @@ inherit utils
 inherit utility-tasks
 inherit logging
 
-OE_EXTRA_IMPORTS ?= ""
-
-OE_IMPORTS += "os sys time oe.path oe.utils oe.types oe.package oe.packagegroup oe.sstatesig oe.lsb oe.cachedpath oe.license oe.qa oe.reproducible oe.rust oe.buildcfg ${OE_EXTRA_IMPORTS}"
-OE_IMPORTS[type] = "list"
-
 PACKAGECONFIG_CONFARGS ??= ""
 
-def oe_import(d):
-    import sys
-
-    bbpath = [os.path.join(dir, "lib") for dir in d.getVar("BBPATH").split(":")]
-    sys.path[0:0] = [dir for dir in bbpath if dir not in sys.path]
-
-    import oe.data
-    for toimport in oe.data.typed_value("OE_IMPORTS", d):
-        try:
-            # Make a python object accessible from the metadata
-            bb.utils._context[toimport.split(".", 1)[0]] = __import__(toimport)
-        except AttributeError as e:
-            bb.error("Error importing OE modules: %s" % str(e))
-    return ""
-
-# We need the oe module name space early (before INHERITs get added)
-OE_IMPORTED := "${@oe_import(d)}"
-
 inherit metadata_scm
 
 def lsb_distro_identifier(d):