tests/tweetnacl: Cleanup headers and includes

tests/unittests/tests-tweetnacl/tests-tweetnacl.c

@@ -19,7 +19,6 @@
  * @}
  */
 
-#include <stdio.h>
 #include <string.h>
 
 #include <tweetnacl.h>

tests/unittests/tests-tweetnacl/tests-tweetnacl.h

@@ -25,24 +25,11 @@
 extern "C" {
 #endif
 
-/**
- * @brief MANDATORY function for collecting random Bytes
- *        required by the tweetnacl package
- */
-extern void randombytes(uint8_t *target, uint64_t n);
-
 /**
 *  @brief   The entry point of this test suite.
 */
 void tests_tweetnacl(void);
 
-/**
- * @brief   Generates tests for tweetnacl
- *
- * @return  embUnit tests if successful, NULL if not.
- */
-Test *tests_tweetnacl_tests(void);
-
 #ifdef __cplusplus
 }
 #endif