remove now all the files fro depot for PDF API since we generate them at build time

experimental/PdfViewer/pdfparser/podofo/autogen/SkPdfNumber_autogen.h

-#ifndef __DEFINED__SkPdfNumber
-#define __DEFINED__SkPdfNumber
-
-#include "SkPdfUtils.h"
-#include "SkPdfEnums_autogen.h"
-#include "SkPdfArray_autogen.h"
-#include "SkPdfInteger_autogen.h"
-
-class SkPdfNumber : public SkPdfInteger {
-public:
-  virtual SkPdfObjectType getType() const { return kNumber_SkPdfObjectType;}
-  virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kNumber_SkPdfObjectType + 1);}
-public:
-  virtual SkPdfNumber* asNumber() {return this;}
-  virtual const SkPdfNumber* asNumber() const {return this;}
-
-private:
-public:
-  double value() const {return fPodofoObj->GetReal();}
-private:
-public:
-  SkPdfNumber(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfInteger(podofoDoc, podofoObj) {}
-
-  SkPdfNumber(const SkPdfNumber& from) : SkPdfInteger(from.fPodofoDoc, from.fPodofoObj) {}
-
-  virtual bool valid() const {return true;}
-
-  SkPdfNumber& operator=(const SkPdfNumber& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
-
-};
-
-#endif  // __DEFINED__SkPdfNumber