examples/vdpa: remove trace of legacy linuxapp

[ upstream commit 0e34bce ]

This check on Linux environment has been added at a time when we already
had switched to using the boolean RTE_EXEC_ENV_LINUXAPP.
It was then missed when converting to RTE_EXEC_ENV_LINUX.

Fixes: edbed86 ("examples/vdpa: introduce a new sample for vDPA")
Fixes: 742bde1 ("build/linux: rename macro from LINUXAPP to LINUX")

Signed-off-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Xiaolong Ye <xiaolong.ye@intel.com>

examples/vdpa/Makefile

@@ -10,7 +10,7 @@ RTE_TARGET ?= x86_64-native-linuxapp-gcc
 
 include $(RTE_SDK)/mk/rte.vars.mk
 
-ifneq ($(CONFIG_RTE_EXEC_ENV),"linuxapp")
+ifneq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
 $(info This application can only operate in a linuxapp environment, \
 please change the definition of the RTE_TARGET environment variable)
 all: