tb Don't schedrelease() when reading in-pipe

kernel/syscall/sched.c

@@ -11,7 +11,7 @@ int32_t SYSCALL0(sys_schedrelease) {
   Proc *proc = PROCS.current;
   spinlock_release(&PROCS.spinlock);
 
-  /* proc_sched((void *)frame); */
+  proc_sched((void *)frame);
 
   return E_OK;
 }

user/tb/main.c

@@ -134,8 +134,6 @@ void do_mode_interactive(void) {
           linebuf[cursor++] = b;
           uprintf("%c", b);
         }
-      } else {
-        schedrelease();
       }
     }