zsh: update Src-exec.c.patch

packages/zsh/Src-exec.c.patch

@@ -10,18 +10,3 @@ diff -u -r ../zsh-5.6/Src/exec.c ./Src/exec.c
  		    }
  		}
  	    } else
-@@ -2739,9 +2739,12 @@
-     sigtrapped[SIGEXIT] = 0;
- #ifdef HAVE_NICE
-     /* Check if we should run background jobs at a lower priority. */
--    if ((how & Z_ASYNC) && isset(BGNICE))
--	if (nice(5) < 0)
-+    if ((how & Z_ASYNC) && isset(BGNICE)) {
-+	errno = 0;
-+	nice(5);
-+	if (errno != 0)
- 	    zwarn("nice(5) failed: %e", errno);
-+    }
- #endif /* HAVE_NICE */
- 
-     return 0;