Remove $(TOOLCHAIN_DIR)/bin and $(STAGING_DIR)/{usr/bin,bin} from the PATH

These shouldn't be needed. Even when the cross-compiler is in
$(STAGING_DIR)/usr/bin, we anyway use an absolute path for TARGET_CC,
TARGET_LD and al.

Not having $(STAGING_DIR)/{usr/bin,bin} in the PATH will avoid having
Buildroot trying to run target binaries.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Makefile.in

@@ -103,17 +103,16 @@ endif
 REAL_GNU_TARGET_NAME=$(ARCH)-unknown-linux-$(LIBC)$(ABI)
 
 ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
-
-# Quotes are needed for spaces et al in path components.
-TARGET_PATH="$(TOOLCHAIN_DIR)/bin:$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin/:$(STAGING_DIR)/bin:$(STAGING_DIR)/usr/bin:$(PATH)"
 TARGET_CROSS=$(STAGING_DIR)/usr/bin/$(REAL_GNU_TARGET_NAME)-
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL),y)
 TOOLCHAIN_EXTERNAL_PREFIX:=$(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX))
 TOOLCHAIN_EXTERNAL_PATH:=$(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PATH))
-TARGET_PATH="$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin/:$(TOOLCHAIN_DIR)/bin:$(TOOLCHAIN_EXTERNAL_PATH)/bin:$(PATH)"
 TARGET_CROSS=$(TOOLCHAIN_EXTERNAL_PATH)/bin/$(TOOLCHAIN_EXTERNAL_PREFIX)-
 endif
 
+# Quotes are needed for spaces et al in path components.
+TARGET_PATH="$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin/:$(PATH)"
+
 # Define TARGET_xx variables for all common binutils/gcc tools by
 # including the --sysroot option where necessary.
 TARGET_AR       = $(TARGET_CROSS)ar