libxslt: remove $(FPIC) from TARGET_CFLAGS

libxslt already makes sure that the compiler emits position-independent
code. Adding $(FPIC) makes no difference. In addition the libxslt build
system puts its own flag behind the CFLAGS, overriding whatever was set
before.

Also with $(FPIC) in CFLAGS even the libxslt utils get compiled with
PIC, which us undesirable.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

libs/libxslt/Makefile

@@ -73,8 +73,6 @@ CONFIGURE_ARGS+= \
 	--without-mem-debug \
 	--without-debugger \
 
-TARGET_CFLAGS += $(FPIC)
-
 define Build/InstallDev/Xslt
 	$(INSTALL_DIR) $(1)/usr/bin $(2)/bin $(1)/usr/include/libxslt \
 		$(1)/usr/include/libexslt $(1)/usr/lib \