remove empty bibliography

content/zettels/cia402.md

@@ -32,9 +32,3 @@ It was defined for CANopen and is also used over EtherCAT (CoE, CANopen over Eth
 -   In CSP, the drive internal loop still does the actual control, the master only provides setpoints.
 -   A generic CiA 402 block can be reused across compatible drives.
     The ESI file, PDO mapping, units, optional objects and vendor quirks are still drive specific.
-
-
-## Bibliography {#bibliography}
-
-<style>.csl-entry{text-indent: -1.5em; margin-left: 1.5em;}</style><div class="csl-bib-body">
-</div>