Replace libdisasm with capstone

src/third_party/libdisasm/x86_imm.h

Index: src/third_party/libdisasm/x86_imm.h
diff --git a/src/third_party/libdisasm/x86_imm.h b/src/third_party/libdisasm/x86_imm.h
deleted file mode 100644
index fa35ff2de466cbf587edcc489459e4858cfb695d..0000000000000000000000000000000000000000
--- a/src/third_party/libdisasm/x86_imm.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef x86_IMM_H
-#define x86_IMM_H
-
-#include "./qword.h"
-#include <sys/types.h>
-
-#ifdef WIN32
-#include <windows.h>
-#endif
-
-/* these are in the global x86 namespace but are not a part of the
- * official API */
-unsigned int x86_imm_sized( unsigned char *buf, size_t buf_len, void *dest,
-			    unsigned int size );
-
-unsigned int x86_imm_signsized( unsigned char *buf, size_t buf_len, void *dest,
-				unsigned int size );
-#endif