Revert "[llvm-objdump] Add support for HIP offload bundles (llvm#114834)"

This reverts commit 06d6623.

Buildbot failure:
https://lab.llvm.org/buildbot/#/builders/145/builds/6871/steps/5/logs/stdio

Author: kazutakahirata

llvm/docs/CommandGuide/llvm-objdump.rst

@@ -217,7 +217,7 @@ OPTIONS
 
 .. option:: --offloading
 
-  Display the content of the LLVM offloading sections and HIP offload bundles.
+  Display the content of the LLVM offloading section.
 
 .. option:: --prefix=<prefix>
 

llvm/include/llvm/Object/OffloadBundle.h

@@ -22,7 +22,6 @@ add_llvm_component_library(LLVMObject
   Object.cpp
   ObjectFile.cpp
   OffloadBinary.cpp
-  OffloadBundle.cpp
   RecordStreamer.cpp
   RelocationResolver.cpp
   SymbolicFile.cpp