Bug 1606191 - Remove hand-written Windows orderfile r=glandium

Since 1839832 we generate an equivalent file based on PGO data
automatically.

Differential Revision: https://phabricator.services.mozilla.com/D195848

toolkit/library/build/Makefile.in

@@ -7,14 +7,3 @@ include $(topsrcdir)/config/config.mk
 include $(topsrcdir)/config/rules.mk
 
 DUMP_SYMBOLS_FLAGS = --count-ctors
-
-ifdef CLANG_CL
-ifdef MOZ_PROFILE_USE
-ifeq (x86,$(TARGET_CPU))
-PGO_LDFLAGS += -ORDER:@$(topsrcdir)/build/win32/orderfile.txt
-endif
-ifeq (x86_64,$(TARGET_CPU))
-PGO_LDFLAGS += -ORDER:@$(topsrcdir)/build/win64/orderfile.txt
-endif
-endif
-endif