meson,configure: remove unused HAVE_FREEDRENO define

Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
diff --git a/meson.build b/meson.build
index fc70c4f..049ef3c 100644
--- a/meson.build
+++ b/meson.build
@@ -253,7 +253,7 @@
 
 foreach t : [[with_intel, 'INTEL'], [with_vmwgfx, 'VMWGFX'],
              [with_nouveau, 'NOUVEAU'],
-             [with_exynos, 'EXYNOS'], [with_freedreno, 'FREEDRENO'],
+             [with_exynos, 'EXYNOS'],
              [with_vc4, 'VC4'],
              [with_etnaviv, 'ETNAVIV'], [with_radeon, 'RADEON']]
   if t[0]