Ignore errors removing old list file

If there's a problem, we'll catch it on the rename(), no need to
add a race condition by checking if it exists first.

Should fix issue 190

src/syncterm/CHANGES

@@ -2,6 +2,7 @@ Version 1.6b
 ------------
 Fix regression in Atari auto-login
 Disable Prestel ENQ/Memory in BBC Micro Mode 7
+Fix error adding a new Web List
 
 Version 1.5
 ------------

src/syncterm/webget.c

@@ -1107,8 +1107,7 @@ do_request(struct http_session *sess)
 		fclose(newfile);
 		newfile = NULL;
 		if (remove(path)) {
-			set_msgf(sess->req, "remove(\"%s\") error", path);
-			goto error_return;
+			// Ignore error
 		}
 
 		if (rename(npath, path) != 0) {