patch 8.2.4252: generating the normal command table at runtime is inefficient

Problem:    Generating the normal command table at runtime is inefficient.
Solution:   Generate the table with a Vim script and put it in a header file.
            (Yegappan Lakshmanan, closes #9648)

src/main.c

@@ -901,9 +901,6 @@ common_init(mparm_T *paramp)
     qnx_init();		// PhAttach() for clipboard, (and gui)
 #endif
 
-    // Init the table of Normal mode commands.
-    init_normal_cmds();
-
     /*
      * Allocate space for the generic buffers (needed for set_init_1() and
      * emsg()).