[LLVMSymbolize] Don't use LLVMSymbolizer::Options in ModuleInfo. NFC.

LLVMSymbolizer::Options is mostly used in LLVMSymbolizer class anyway.
Let's keep their usage restricted to that class, especially given that
it's worth to move ModuleInfo to a different header, independent from
the symbolizer class.

llvm-svn: 251363