refactor(pdf): remove unused code

src/utils/pdf.ts

@@ -8,11 +8,6 @@ PDFJS.GlobalWorkerOptions.workerSrc = new URL(
   import.meta.url
 ).toString()
 
-/**
- * Scale between the PDF page's natural size and rendered size
- * @constant {number}
- */
-export const DEFAULT_SCALE: number = 1
 /**
  * Defined font size used when generating a PDF. Currently it is difficult to fully
  * correlate font size used at the time of filling in / drawing on the PDF
@@ -32,12 +27,6 @@ export const FONT_TYPE: string = 'Arial'
  */
 export const inPx = (coordinate: number): string => `${coordinate}px`
 
-/**
- * A utility that transforms a drawing coordinate number into a CSS-compatible percentage string
- * @param coordinate
- */
-export const inPerc = (coordinate: number): string => `${coordinate}%`
-
 /**
  * A utility that checks if a given file is of the pdf type
  * @param file