fix(flomni): stop calling write_pdf_report() twice per scan start

tomo_scan()'s new-scan branch called write_pdf_report() once inside
the "real e-account" if-branch and again unconditionally right after,
so every scan start under a real account wrote the PDF, sent the
scilog entry, and (as of the previous commit) uploaded to the samples
folder twice. Keep only the unconditional call, matching LamNI's
equivalent structure.

csaxs_bec/bec_ipython_client/plugins/flomni/flomni.py

@@ -2529,7 +2529,6 @@ class Flomni(
                     "test additional info",
                     "BEC",
                 )
-                self.write_pdf_report()
             else:
                 self.tomo_id = 0
             self.write_pdf_report()