Interesting. There was one more of this in here.

pisi/api.py

@@ -339,16 +339,6 @@ def search_source(terms, lang=None, repo=None):
     sourcedb = pisi.db.sourcedb.SourceDB()
     return sourcedb.search_spec(terms, lang, repo)
 
-def search_installed(terms, lang=None):
-    """
-    Return a list of components that contains all the given terms either in its name, summary or
-    description -> list_of_strings
-    @param terms: a list of terms used to search components -> list_of_strings
-    @param lang: language of the summary and description
-    """
-    installdb = pisi.db.installdb.InstallDB()
-    return installdb.search_package(terms, lang)
-
 def search_component(terms, lang=None, repo=None):
     """
     Return a list of components that contains all the given terms either in its name, summary or