Remove unused `trace_builtins.py` script

This closes #191.

configurations/trace_builtins.py

@@ -1,33 +0,0 @@
-import json
-docdata = json.loads(open("../doc/classes.json").read())
-
-classes = ""
-for c in docdata['classes'].keys():
-  classes += c + "|"
-print(classes)
-
-print("")
-
-builtinfuctions = ''
-for m in docdata['classes']['@GDScript']['methods']:
-  builtinfuctions += m['name'] +'|'
-print(builtinfuctions)
-
-print("")
-
-consts = ''
-for c in docdata['classes']['@GDScript']['constants']:
-  consts += c['name'] + "|"
-
-for c in docdata['classes']['@Global Scope']['constants']:
-  consts += c['name'] + "|"
-
-print consts
-
-print("")
-
-props = ""
-for p in docdata['classes']['@Global Scope']['properties']:
-  props += p['name'] + "|"
-
-print props