!66 【轻量级 PR】：update apps/shell/src/shcmd.c.

Merge pull request !66 from 冷钦街/N/A

apps/shell/src/shcmd.c

@@ -457,17 +457,11 @@ unsigned int OsCmdKeyShift(const char *cmdKey, char *cmdOut, unsigned int size)
 int OsTabCompletion(char *cmdKey, unsigned int *len)
 {
     int count;
-    char *cmdMainStr = cmdKey;
 
     if ((cmdKey == NULL) || (len == NULL)) {
         return (int)SH_ERROR;
     }
 
-    /* cut left space */
-    while (*cmdMainStr == 0x20) {
-        cmdMainStr++;
-    }
-
     count = OsTabMatchFile(cmdKey, len);
 
     return count;