RedfishPkg/RedfishCrtLib: remove multiple definitions.

There are two definitions for below functions in RedfishCrtLib.h. Create
this change to remote duplicated functions.
Function list: strcmp(), strncmp(), strncpy(), strcpy(), strcat(),
strlen(), strchr(), strcasecmp(), strstr(), memcmp(), memset(),
memcpy(), memchr(), memcmp() and memmove().

Signed-off-by: Nickle Wang <[email protected]>
Cc: Abner Chang <[email protected]>
Cc: Igor Kulchytskyy <[email protected]>
Cc: Nick Ramirez <[email protected]>
Cc: Mike Maslenkin <[email protected]>
Reviewed-by: Abner Chang <[email protected]>
Acked-by: Mike Maslenkin <[email protected]>

RedfishPkg/Include/Library/RedfishCrtLib.h

@@ -172,20 +172,6 @@ free        (
   void *
   );
 
-void           *
-memset     (
-  void *,
-  int,
-  size_t
-  );
-
-int
-memcmp      (
-  const void *,
-  const void *,
-  size_t
-  );
-
 int
 isdigit     (
   int
@@ -216,105 +202,20 @@ isalnum     (
   int
   );
 
-void           *
-memcpy     (
-  void *,
-  const void *,
-  size_t
-  );
-
-void           *
-memset     (
-  void *,
-  int,
-  size_t
-  );
-
-void           *
-memchr     (
-  const void *,
-  int,
-  size_t
-  );
-
-int
-memcmp      (
-  const void *,
-  const void *,
-  size_t
-  );
-
-void           *
-memmove    (
-  void *,
-  const void *,
-  size_t
-  );
-
-int
-strcmp      (
-  const char *,
-  const char *
-  );
-
 int
 strncmp     (
   const char *,
   const char *,
   size_t
   );
 
-char           *
-strcpy     (
-  char *,
-  const char *
-  );
-
-size_t
-strlen      (
-  const char *
-  );
-
-char           *
-strcat     (
-  char *,
-  const char *
-  );
-
-char           *
-strchr     (
-  const char *,
-  int
-  );
-
-int
-strcasecmp  (
-  const char *,
-  const char *
-  );
-
 int
 strncasecmp (
   const char *,
   const char *,
   size_t
   );
 
-char           *
-strncpy    (
-  char *,
-  size_t,
-  const char *,
-  size_t
-  );
-
-int
-strncmp     (
-  const char *,
-  const char *,
-  size_t
-  );
-
 char           *
 strrchr    (
   const char *,
@@ -328,12 +229,6 @@ strtoul     (
   int
   );
 
-char *
-strstr      (
-  const char  *s1,
-  const char  *s2
-  );
-
 long
 strtol      (
   const char *,