Remove image part

Doesn't really save much code and is confusing because an image can be many types other than jpeg

Author: Caitlin Bales (MSFT)

src/main/java/com/microsoft/graph/models/extensions/Multipart.java

@@ -85,16 +85,6 @@ public void addHtmlPart(String name, String content) throws IOException {
 		addPart(name, "text/html", content);
 	}
 
-	/**
-	 * Add an image/jpeg part to the multipart body
-	 * @param name The name of the part
-	 * @param imageFile The image file
-	 * @throws IOException Throws an exception if the output stream cannot be written to
-	 */
-	public void addImagePart(String name, java.io.File imageFile) throws IOException {
-		addFilePart(name, "image/jpeg", imageFile);
-	}
-	
 	/**
 	 * Add a file part to the multipart body
 	 * @param name The name of the part

src/test/java/com/microsoft/graph/functional/OneNoteTests.java

@@ -404,7 +404,7 @@ public void testMultipartPost(){
         	File pdfFile = new File("src/test/resources/document.pdf");
 
         	multipart.addHtmlPart("Presentation", htmlContent);
-        	multipart.addImagePart("hamilton", imgFile);
+        	multipart.addFilePart("hamilton", "image/jpg", imgFile);
         	multipart.addFilePart("metadata", "application/pdf", pdfFile);
 
             // Add multipart request header