Remove unused files, and tidy the directory structure of the remaining ones.

tests/test_common.h

Index: tests/test_common.h
diff --git a/tests/test_common.h b/tests/test_common.h
index 5485fc455fd734063050357f7084a0bce739533e..d62071f714686c54ecbf78827ef5dc2643f08edd 100644
--- a/tests/test_common.h
+++ b/tests/test_common.h
@@ -9,8 +9,6 @@
 
 #include <stdint.h>
 
-#include "kernel_image.h"
-
 extern int gTestSuccess;
 
 /* Return 1 if result is equal to expected_result, else return 0.
@@ -20,29 +18,4 @@ int TEST_EQ(int result, int expected_result, char* testname);
  * Also update the global gTestSuccess flag if test fails. */
 int TEST_NEQ(int result, int not_expected_result, char* testname);
 
-/* Test kernel image generation functions. */
-KernelImage* GenerateTestKernelImage(int firmware_sign_algorithm,
-                                     int kernel_sign_algorithm,
-                                     const uint8_t* kernel_sign_key,
-                                     int kernel_key_version,
-                                     int kernel_version,
-                                     uint64_t kernel_len,
-                                     const char* firmware_key_file,
-                                     const char* kernel_key_file,
-                                     uint8_t kernel_data_fill_char);
-uint8_t* GenerateTestKernelBlob(int firmware_sign_algorithm,
-                                int kernel_sign_algorithm,
-                                const uint8_t* kernel_sign_key,
-                                int kernel_key_version,
-                                int kernel_version,
-                                uint64_t kernel_len,
-                                const char* firmware_key_file,
-                                const char* kernel_key_file);
-
-/* Generates a test kernel iamge for rollback tests with a given
- * [kernel_key_version} and [kernel_version]. If [is_corrupt] is 1,
- * then the image has invalid signatures and will fail verification. */
-uint8_t* GenerateRollbackTestKernelBlob(int kernel_key_version,
-                                        int kernel_version,
-                                        int is_corrupt);
 #endif  /* VBOOT_REFERENCE_TEST_COMMON_H_ */