Remove useless prototype

Signed-off-by: Ikey Doherty <ikey@solus-project.com>

src/shim/lsi.c

@@ -144,12 +144,6 @@ bool lsi_config_load(LsiConfig *config)
         return true;
 }
 
-bool lsi_config_store(__lsi_unused__ LsiConfig *config)
-{
-        fputs("lsi_config_store(): Not yet implemented\n", stderr);
-        return false;
-}
-
 void lsi_config_load_defaults(LsiConfig *config)
 {
         assert(config != NULL);

src/shim/lsi.h

@@ -39,13 +39,6 @@ typedef struct LsiConfig {
  */
 bool lsi_config_load(LsiConfig *config);
 
-/**
- * Attempt to write the LsiConfiguration to storage
- *
- * @returns true if the write succeeded, otherwise false.
- */
-bool lsi_config_store(LsiConfig *config);
-
 /**
  * Set the defaults for the LsiConfiguration
  */