[source] px5g: remove obsolete reference to $(BUILD_VARIANT)

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/589a16fdb64dcd32995255be42dd0bb8f05de2d4

commit 589a16fdb64dcd32995255be42dd0bb8f05de2d4
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Mon Jan 9 16:37:19 2017 +0100

    px5g: remove obsolete reference to $(BUILD_VARIANT)
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 package/utils/px5g/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/utils/px5g/Makefile b/package/utils/px5g/Makefile
index 23fb0e1..d339381 100644
--- a/package/utils/px5g/Makefile
+++ b/package/utils/px5g/Makefile
@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=px5g
 PKG_RELEASE:=4
 PKG_LICENSE:=LGPL-2.1
-PKG_BUILD_DIR:=$(BUILD_DIR)/px5g-$(BUILD_VARIANT)
+PKG_BUILD_DIR:=$(BUILD_DIR)/px5g
 
 PKG_USE_MIPS16:=0