Remove old, unused preamble block

jinja/base.ltx

@@ -3,10 +3,6 @@
 \usepackage{ots}
 \usepackage{ots-sectioning}
 
-
-% \BLOCK{block preamble}
-% \BLOCK{endblock}
-
 \BLOCK{for item in preambles}
 \VAR{item}
 \BLOCK{endfor}