Revert "ldso: install backward compatibility symlink by default"

This reverts commit f52fb21a7af0aa4e983b3e6c2ddd1b6a526b5169.

Totally wrong patch.

ldso/ldso/Makefile.in

@@ -74,8 +74,6 @@ $(ldso): $(ldso:.$(ABI_VERSION)=)
 $(ldso:.$(ABI_VERSION)=): | $(top_builddir)lib
 $(ldso:.$(ABI_VERSION)=): $($(UCLIBC_LDSO_NAME)_OUT)/$(UCLIBC_LDSO_NAME)_so.a
 	$(call link.so,$(ldso_FULL_NAME),$(ABI_VERSION))
-	# link for backward compatibility
-	$(call link.so,$(ldso_FULL_NAME),0)
 
 $($(UCLIBC_LDSO_NAME)_OUT)/$(UCLIBC_LDSO_NAME)_so.a: $(ldso-y)
 	$(Q)$(RM) $@