Turn off dump/emit routines when building minimal subzero.

src/IceInst.h

Index: src/IceInst.h
diff --git a/src/IceInst.h b/src/IceInst.h
index 5d5101bccdf457d4ed3856d36c0ee4112e9ad305..16b1b65027000bb9f977453523d3c1f744463572 100644
--- a/src/IceInst.h
+++ b/src/IceInst.h
@@ -838,8 +838,8 @@ protected:
 // Override the default ilist traits so that Inst's private ctor and
 // deleted dtor aren't invoked.
 template <>
-struct llvm::ilist_traits<Ice::Inst> : public llvm::ilist_default_traits<
-                                           Ice::Inst> {
+struct llvm::ilist_traits<Ice::Inst>
+    : public llvm::ilist_default_traits<Ice::Inst> {
   Ice::Inst *createSentinel() const {
     return static_cast<Ice::Inst *>(&Sentinel);
   }