[RuntimeDyld][MachO/ARM] Don't add a redundant relocation entry.

We only need to add this entry once for it to be fixed up.

llvm-svn: 308375

lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOARM.h

@@ -288,7 +288,6 @@ private:
                       HalfDiffKindBits);
 
     addRelocationForSection(R, SectionAID);
-    addRelocationForSection(R, SectionBID);
 
     return ++RelI;
   }