Do not set entry-point for Windows

Bug: http://b/62424007

This breaks 64-bit Windows executables.  Probably due to the Clang
migration, the entry-point need not be set even for 32-bit executables.

Test: 32-bit and 64-bit aapt2_tests.exe and ziparchive-tests.exe can
start.  (There are some failed tests, though).

Change-Id: I1dea9137c79c5f26b493640cfae0856c1a7ea301
diff --git a/core/definitions.mk b/core/definitions.mk
index 873ec7f..fab5e42 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1986,10 +1986,6 @@
 HOST_FPIE_FLAGS :=
 else
 HOST_FPIE_FLAGS := -pie
-# Force the correct entry point to workaround a bug in binutils that manifests with -pie
-ifeq ($(HOST_CROSS_OS),windows)
-HOST_CROSS_FPIE_FLAGS += -Wl,-e_mainCRTStartup
-endif
 endif
 
 ifneq ($(HOST_CUSTOM_LD_COMMAND),true)