Revert "Allow preopted apps to have sharpened calls for non-x86 architectures."

This reverts commit 1e3dfff2b73e142c568625a0310c1764658218c4.
diff --git a/compiler/oat_writer.cc b/compiler/oat_writer.cc
index 7516811..3c36ffa 100644
--- a/compiler/oat_writer.cc
+++ b/compiler/oat_writer.cc
@@ -1103,18 +1103,10 @@
     if (UNLIKELY(target_offset == 0)) {
       mirror::ArtMethod* target = GetTargetMethod(patch);
       DCHECK(target != nullptr);
-      size_t size = GetInstructionSetPointerSize(writer_->compiler_driver_->GetInstructionSet());
-      const void* oat_code_offset = target->GetEntryPointFromQuickCompiledCodePtrSize(size);
-      if (oat_code_offset != 0) {
-        DCHECK(!Runtime::Current()->GetClassLinker()->IsQuickResolutionStub(oat_code_offset));
-        DCHECK(!Runtime::Current()->GetClassLinker()->IsQuickToInterpreterBridge(oat_code_offset));
-        DCHECK(!Runtime::Current()->GetClassLinker()->IsQuickGenericJniStub(oat_code_offset));
-        target_offset = PointerToLowMemUInt32(oat_code_offset);
-      } else {
-        target_offset = target->IsNative()
-            ? writer_->oat_header_->GetQuickGenericJniTrampolineOffset()
-            : writer_->oat_header_->GetQuickToInterpreterBridgeOffset();
-      }
+      DCHECK_EQ(target->GetQuickOatCodeOffset(), 0u);
+      target_offset = target->IsNative()
+          ? writer_->oat_header_->GetQuickGenericJniTrampolineOffset()
+          : writer_->oat_header_->GetQuickToInterpreterBridgeOffset();
     }
     return target_offset;
   }
@@ -1146,9 +1138,10 @@
 
   void PatchCodeAddress(std::vector<uint8_t>* code, uint32_t offset, uint32_t target_offset)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    uint32_t address = writer_->image_writer_ == nullptr ? target_offset :
-        PointerToLowMemUInt32(writer_->image_writer_->GetOatFileBegin() +
-                              writer_->oat_data_offset_ + target_offset);
+    // NOTE: Direct calls across oat files don't use linker patches.
+    DCHECK(writer_->image_writer_ != nullptr);
+    uint32_t address = PointerToLowMemUInt32(writer_->image_writer_->GetOatFileBegin() +
+                                             writer_->oat_data_offset_ + target_offset);
     DCHECK_LE(offset + 4, code->size());
     uint8_t* data = &(*code)[offset];
     data[0] = address & 0xffu;