[lldb] Remove verbose DWARF spec comments from evaluator (NFC) (#195140)
Most labels in DWARFExpression::Evaluate have a 3-10 line
OPCODE/OPERANDS/DESCRIPTION block copied from the DWARF specification.
My assumption is that anyone editing this code should be consulting the
latest version of the spec, which is the (only) source of truth. This
approach doesn't scale, create the opportunity for subtle bugs and makes
the code harder to read.
Anything LLDB specific (i.e. that's not part of the spec) is preserved.