Remove the DWARFExpression -> Clang ExpressionParser dependency

It was completly unused and broke the part of the encapsulation that
common code shouldn't depend on specific plugins or language specific
features.

llvm-svn: 311000
diff --git a/lldb/source/Core/ValueObjectVariable.cpp b/lldb/source/Core/ValueObjectVariable.cpp
index 9b9e51a..167ba8e 100644
--- a/lldb/source/Core/ValueObjectVariable.cpp
+++ b/lldb/source/Core/ValueObjectVariable.cpp
@@ -156,9 +156,8 @@
                 target);
     }
     Value old_value(m_value);
-    if (expr.Evaluate(&exe_ctx, nullptr, nullptr, nullptr,
-                      loclist_base_load_addr, nullptr, nullptr, m_value,
-                      &m_error)) {
+    if (expr.Evaluate(&exe_ctx, nullptr, loclist_base_load_addr, nullptr,
+                      nullptr, m_value, &m_error)) {
       m_resolved_value = m_value;
       m_value.SetContext(Value::eContextTypeVariable, variable);