[lldb] Partially unbreak the build due to a bad merge conflict resolution

In rdar://147772462 a merge conflict occured due to this upstream
commit:

```
commit 2edf534
Author: Dmitry Vasilyev <[email protected]>
Date:   Mon Mar 24 18:40:49 2025 +0400

    [LLDB][NFC] Added the interface DWARFExpression::Delegate to break dependencies and reduce lldb-server size (llvm#131645)
```

I resolved the conflict but it failed to build. This patch unbreaks the
build but only when `LLDB_ENABLE_SWIFT` is OFF. This will hopefully be
enough to unblock the automergers. The build will almost certainly be
broken when `LLDB_ENABLE_SWIFT` is ON but I don't understand the code
well enough to fix it correctly so the LLDB folks will need to properly
resolve this in a follow up patch.

rdar://147795421

Author: delcypher

lldb/source/Expression/DWARFExpression.cpp

@@ -42,8 +42,6 @@
 #include "Plugins/LanguageRuntime/Swift/SwiftLanguageRuntime.h"
 #endif
 
-#include "Plugins/SymbolFile/DWARF/DWARFUnit.h"
-
 using namespace lldb;
 using namespace lldb_private;
 using namespace lldb_private::dwarf;
@@ -664,7 +662,7 @@ static llvm::Expected<Value> SwiftAsyncEvaluate_DW_OP_entry_value(
 #endif // LLDB_ENABLE_SWIFT
 
 static llvm::Error
-Evaluate_DW_OP_entry_value(std::vector<Value> &stack, const DWARFUnit *dwarf_cu,
+Evaluate_DW_OP_entry_value(std::vector<Value> &stack, const DWARFExpression::Delegate* dwarf_cu,
                            ExecutionContext *exe_ctx, RegisterContext *reg_ctx,
                            const DataExtractor &opcodes,
                            lldb::offset_t &opcode_offset, Log *log) {