env: remove duplicated env_get_char_spec()

env_fat and env_remote have an implementation of env_get_char_spec()
function that is not different than the default.
Remove the duplicated code.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>

common/env_fat.c

@@ -40,11 +40,6 @@ env_t *env_ptr;
 
 DECLARE_GLOBAL_DATA_PTR;
 
-uchar env_get_char_spec(int index)
-{
-	return *((uchar *)(gd->env_addr + index));
-}
-
 int env_init(void)
 {
 	/* use default */

common/env_remote.c

@@ -41,11 +41,6 @@ DECLARE_GLOBAL_DATA_PTR;
 #define CONFIG_ENV_OFFSET 0
 #endif
 
-uchar env_get_char_spec(int index)
-{
-	return *((uchar *)(gd->env_addr + index));
-}
-
 int env_init(void)
 {
 	if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {