Do not remove an empty note file after edit session

Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk>
Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>

src/io.c

@@ -1578,22 +1578,6 @@ unsigned io_get_pid(char *file)
 	return pid;
 }
 
-/*
- * Check whether a file is empty.
- */
-int io_file_is_empty(char *file)
-{
-	FILE *fp;
-	int ret = -1;
-
-	if (file && (fp = fopen(file, "r"))) {
-		ret = (fgetc(fp) == '\n' && fgetc(fp) == EOF) || feof(fp);
-		fclose(fp);
-	}
-
-	return ret;
-}
-
 /*
  * Check whether two files are equal.
  */