remove converttags.pl
remove converttags.pl

The converttags script replaced the tags:

[PRODUCTNAME] [TITLE] and two color references

in the source code, but those tags don't occur (anymore?) and it is
never called. So remove this.

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core