Remove default schilder

data/GenericEvent42-1331353749.schild

-{"pdfname": "GenericEvent42-1331353749.schild.pdf", "img": "pictograms-nps-misc-camera.png", "headline": "Generic\r\nEvent42", "text": "Man kann Wiki-Syntax benutzen.\r\n\r\n* Zum Beispiel f\u00fcr\r\n* Bullet Lists\r\n", "markup": "latex", "reusefilename": "on", "textemplate": "image-left_bothtext-right.tex", "filename": "GenericEvent42-1331353749.schild"}
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data/GenericEvent42-1545270496.schild

-{"img": "pictograms-nps-parking-2.png", "headline": "GenericEvent42", "text": "", "markup": "latex", "textemplate": "headline-top_arrowup_image-right.tex", "filename": "GenericEvent42-1545270496.schild", "pdfname": "GenericEvent42-1545270496.schild.pdf", "reusefilename": ""}
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data/GenericEvent42-306092239.schild

-{"pdfname": "GenericEvent42-306092239.schild.pdf", "img": "pictograms-nps-misc-camera.png", "headline": "GenericEvent42", "text": "Willkommen zum GenericEvent42!", "markup": "latex", "reusefilename": "on", "textemplate": "headline-top_image-left_text-right.tex", "filename": "GenericEvent42-306092239.schild"}
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