Revert "[LLDB] Impove ObjectFileELF's .dynamic parsing and usage. (#101237)"

This reverts commit 28ba8a5.

Reverting since this broke the buildbot at
https://green.lab.llvm.org/job/llvm.org/view/LLDB/job/as-lldb-cmake/9352/.

Author: PiJoules

lldb/include/lldb/Symbol/ObjectFile.h

@@ -656,9 +656,8 @@ class ObjectFile : public std::enable_shared_from_this<ObjectFile>,
   // When an object file is in memory, subclasses should try and lock the
   // process weak pointer. If the process weak pointer produces a valid
   // ProcessSP, then subclasses can call this function to read memory.
-  static lldb::WritableDataBufferSP
-  ReadMemory(const lldb::ProcessSP &process_sp, lldb::addr_t addr,
-             size_t byte_size);
+  static lldb::DataBufferSP ReadMemory(const lldb::ProcessSP &process_sp,
+                                       lldb::addr_t addr, size_t byte_size);
 
   // This function returns raw file contents. Do not use it if you want
   // transparent decompression of section contents.