fixed f924cc77 from https://gitee.com/zhangdengyu/kernel_liteos_a/pulls/1129

fix：修复内核调用栈解析脚本bug

方案描述：
1、修复内核调用栈解析脚本parse_mem_info.sh的bug，将多余符号(`)去除

BREAKING CHANGE：
无

Close：#I6I6BA
Signed-off-by: Nzhangdengyu <zhangdengyu2@huawei.com>
Change-Id: I0b0d7e5f6e79313e5f517f89395f4195883cfe06

tools/scripts/parse_memory/parse_mem_info.sh

@@ -38,7 +38,7 @@ get_line()
 {
     SYM_ADDR=$(echo $1 | awk '{print $2}')
     ELF_OFFSET=$(echo ${SYM_ADDR} | cut -d '[' -f2 | cut -d ']' -f1)
-    FILE_LINE=$(${ADDR2LINE} -f -e $2 ${ELF_OFFSET} | awk 'NR==2'`)
+    FILE_LINE=$(${ADDR2LINE} -f -e $2 ${ELF_OFFSET} | awk 'NR==2')
     if [[ "${FILE_LINE}" == *"?"* ]]; then
         typeset ELF_OFFSET=$((ELF_OFFSET+LOAD_BASE))
         ELF_OFFSET=$(echo "obase=16;${ELF_OFFSET}" | bc)