[uaccess] Remove redundant copy_from_user() and copy_to_user()

Remove the now-redundant copy_from_user() and copy_to_user() wrapper
functions.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/tests/asn1_test.c

@@ -33,6 +33,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 #undef NDEBUG
 
 #include <stdlib.h>
+#include <string.h>
 #include <assert.h>
 #include <ipxe/image.h>
 #include <ipxe/asn1.h>

src/tests/cpio_test.c

@@ -33,6 +33,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 #undef NDEBUG
 
 #include <stdlib.h>
+#include <string.h>
 #include <ipxe/cpio.h>
 #include <ipxe/test.h>
 

src/tests/pixbuf_test.c

@@ -32,6 +32,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 /* Forcibly enable assertions */
 #undef NDEBUG
 
+#include <string.h>
 #include <assert.h>
 #include <ipxe/image.h>
 #include <ipxe/pixbuf.h>

src/tests/test.c

@@ -34,6 +34,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 
 #include <stddef.h>
 #include <stdio.h>
+#include <string.h>
 #include <errno.h>
 #include <assert.h>
 #include <ipxe/test.h>