Remove unnecessary execute flag from some init.d files

board/common/overlay/etc/init.d/base

@@ -1,4 +1,3 @@
-#!/bin/bash
 
 source /etc/version
 board_sn=$(/etc/init.d/boardsn)
@@ -40,7 +39,7 @@ prepare_conf() {
     
     if [[ -n "$user_conf" && -e "$user_conf" ]]; then
         cp -rf "$user_conf" "$actual_conf"
-        grep -E "/boot .*ro[\s,]" /proc/mounts
+        grep -E "/boot .*ro[\s,]" /proc/mounts &>/dev/null
         RO=$?
         test $RO == 0 && mount -o remount,rw /boot
         rm -rf $user_conf

board/common/overlay/etc/init.d/os_conf

@@ -1,4 +1,3 @@
-#!/bin/bash
 
 _sys_conf="/etc/os.conf"
 _boot_conf="/boot/os.conf"

board/common/overlay/etc/init.d/panic

@@ -1,4 +1,3 @@
-#!/bin/bash
 
 _PANIC_COUNTER_FILE="/var/lib/panic_counter"
 _PANIC_REBOOT_DELAY_FACTOR=10