Remove svpaint.cpp from libtesseract
Remove svpaint.cpp from libtesseract

svpaint is a standalone application (it includes a main function)
and should not be part of the Tesseract library.

Signed-off-by: Stefan Weil <8d4c780fcfdc41841e5070f4c43da8958ba6aec0@weilnetz.de>

stweil/tesseract,stweil/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,amitdo/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,UB-Mannheim/tesseract,tesseract-ocr/tesseract,amitdo/tesseract,jbarlow83/tesseract,stweil/tesseract,amitdo/tesseract,tesseract-ocr/tesseract,jbarlow83/tesseract,jbarlow83/tesseract,jbarlow83/tesseract,UB-Mannheim/tesseract,stweil/tesseract,tesseract-ocr/tesseract,jbarlow83/tesseract,amitdo/tesseract,amitdo/tesseract,stweil/tesseract,UB-Mannheim/tesseract