LLVMReactorDebugInfo: Remove REACTOR_LLVM_VERSION check
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 <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Antonio Maiorano <86d87a6550afb6b07035c9743fa181900589f7e0@google.com>
Reviewed-by: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@google.com>
Tested-by: Ben Clayton <1f693eb7158dc33015048c09d6712f74dabddf79@google.com>

google/swiftshader,google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader