LLVMReactorDebugInfo: Remove REACTOR_LLVM_VERSION check

This code was added just before LLVM 3 was removed, and can be considered a merge conflict.

Bug: b/130460252
Change-Id: If7d6f46c78a94cb8f3cc07ec4ba7c91a58e5926d
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/29813
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Ben Clayton <bclayton@google.com>
diff --git a/src/Reactor/LLVMReactorDebugInfo.cpp b/src/Reactor/LLVMReactorDebugInfo.cpp
index 75b4a03..d39742a 100644
--- a/src/Reactor/LLVMReactorDebugInfo.cpp
+++ b/src/Reactor/LLVMReactorDebugInfo.cpp
@@ -19,10 +19,6 @@
 #include "Reactor.hpp"
 #include "LLVMReactor.hpp"
 
-#if REACTOR_LLVM_VERSION < 7
-#error "ENABLE_RR_DEBUG_INFO can currently only be used with LLVM 7+"
-#endif
-
 #include "backtrace.h"
 
 #include "llvm/Demangle/Demangle.h"