Remove duplicate mbedtls/build_info.h include

This commit removes duplicate includes for mbedtls/build_info.h where
the file already includes common.h.

Signed-off-by: Harry Ramsey <harry.ramsey@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 5bda91a..66117dd 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -11,7 +11,6 @@
 #define MBEDTLS_SSL_MISC_H
 
 #include "common.h"
-#include "mbedtls/build_info.h"
 
 #include "mbedtls/error.h"
 
diff --git a/library/x509_internal.h b/library/x509_internal.h
index 1ec808a..ec1ac50 100644
--- a/library/x509_internal.h
+++ b/library/x509_internal.h
@@ -13,8 +13,6 @@
 #include "common.h"
 #include "mbedtls/private_access.h"
 
-#include "mbedtls/build_info.h"
-
 #include "mbedtls/x509.h"
 #include "mbedtls/asn1.h"
 #include "pk_internal.h"