Use new table as source for skill requirement data

eos/db/gamedata/item.py

@@ -44,7 +44,9 @@ items_table = Table("invtypes", gamedata_meta,
                     Column("metaLevel", Integer),
                     Column("metaGroupID", Integer, ForeignKey("invmetagroups.metaGroupID"), index=True),
                     Column("variationParentTypeID", Integer, ForeignKey("invtypes.typeID"), index=True),
-                    Column("replacements", String))
+                    Column("replacements", String),
+                    Column("reqskills", String),
+                    Column("requiredfor", String))
 
 from .traits import traits_table  # noqa
 

eos/db/gamedata/queries.py

@@ -424,25 +424,3 @@ def getDynamicItem(itemID, eager=None):
     except exc.NoResultFound:
         result = None
     return result
-
-
-def getRequiredFor(itemID, attrMapping):
-    Attribute1 = aliased(Attribute)
-    Attribute2 = aliased(Attribute)
-
-    skillToLevelClauses = []
-
-    for attrSkill, attrLevel in attrMapping.items():
-        skillToLevelClauses.append(and_(Attribute1.attributeID == attrSkill, Attribute2.attributeID == attrLevel))
-
-    queryOr = or_(*skillToLevelClauses)
-
-    q = select((Attribute2.typeID, Attribute2.value),
-               and_(Attribute1.value == itemID, queryOr),
-               from_obj=[
-                   join(Attribute1, Attribute2, Attribute1.typeID == Attribute2.typeID)
-               ])
-
-    result = gamedata_session.execute(q).fetchall()
-
-    return result