parisc: remove check for minimum required GCC version

Commit cafa0010 ("Raise the minimum required gcc version to 4.6")
bumped the minimum GCC version to 4.6 for all architectures.

The version check in arch/parisc/Makefile is obsolete now.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Helge Deller <deller@gmx.de>

arch/parisc/Makefile

@@ -156,12 +156,3 @@ define archhelp
 	@echo  '		  copy to $$(INSTALL_PATH)'
 	@echo  '  zinstall	- Install compressed vmlinuz kernel'
 endef
-
-# we require gcc 3.3 or above to compile the kernel
-archprepare: checkbin
-checkbin:
-	@if test "$(cc-version)" -lt "0303"; then \
-		echo -n "Sorry, GCC v3.3 or above is required to build " ; \
-		echo "the kernel." ; \
-		false ; \
-	fi