ARM: uniphier: drop unnecessary "bootm_low" environment define

This environment define has been here to work around the LMB
allocation error introduced by commit 9c11135ce053 ("image: fix
getenv_bootm_size() function").

It is no longer needed because the root cause was fixed by commit
0cb389dd1a38 ("image: fix getenv_bootm_size() function again").

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
1 file changed