[OE-core] bitbake.conf: Drop -fpermissive

[Richard Purdie]

Drop the -fpermissive C++ compiler flag. We've had this around for years, most
code should have been fixed long ago. Its possible some recipes may fail
however we can (and should) just use the flag where needed.

An OE-Core world build seems to work just fine with this change.

Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index f81dea6..4879aa2 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -498,9 +498,9 @@ BUILDSDK_CFLAGS = "${BUILDSDK_CPPFLAGS} ${BUILD_OPTIMIZATION}"
 export CFLAGS = "${TARGET_CFLAGS}"
 export TARGET_CFLAGS = "${TARGET_CPPFLAGS} ${SELECTED_OPTIMIZATION}"
 
-export BUILD_CXXFLAGS = "${BUILD_CFLAGS} -fpermissive"
+export BUILD_CXXFLAGS = "${BUILD_CFLAGS}"
 export CXXFLAGS = "${TARGET_CXXFLAGS}"
-export TARGET_CXXFLAGS = "${TARGET_CFLAGS} -fpermissive"
+export TARGET_CXXFLAGS = "${TARGET_CFLAGS}"
 
 export BUILD_LDFLAGS = "-L${STAGING_LIBDIR_NATIVE} \
                         -L${STAGING_BASE_LIBDIR_NATIVE} \