mem-ruby: Remove BUILD_GPU guards from ruby coalescer models

A previous commit added BUILD_GPU guards to gpu coalescer models since
a related cache recorder commit added GPU support. This is no longer
needed since the cache recorder moved to using a vector of RubyPorts
instead of Sequencer/GPUCoalescer pointers. This commit removes
BUILD_GPU guards from the Ruby coalescer models

Change-Id: I23a7957d82524d6cd3483d22edfb35ac51796eca

src/mem/ruby/slicc_interface/AbstractController.hh

@@ -70,9 +70,7 @@ namespace ruby
 {
 
 class Network;
-#ifdef BUILD_GPU
 class GPUCoalescer;
-#endif
 class DMASequencer;
 
 // used to communicate that an in_port peeked the wrong message type

src/mem/ruby/system/GPUCoalescer.hh

@@ -32,10 +32,6 @@
 #ifndef __MEM_RUBY_SYSTEM_GPU_COALESCER_HH__
 #define __MEM_RUBY_SYSTEM_GPU_COALESCER_HH__
 
-#include "config/build_gpu.hh"
-
-#if BUILD_GPU
-
 #include <iostream>
 #include <unordered_map>
 
@@ -550,5 +546,4 @@ operator<<(std::ostream& out, const GPUCoalescer& obj)
 } // namespace ruby
 } // namespace gem5
 
-#endif // BUILD_GPU
 #endif // __MEM_RUBY_SYSTEM_GPU_COALESCER_HH__

src/mem/ruby/system/VIPERCoalescer.hh

@@ -32,10 +32,6 @@
 #ifndef __MEM_RUBY_SYSTEM_VIPERCOALESCER_HH__
 #define __MEM_RUBY_SYSTEM_VIPERCOALESCER_HH__
 
-#include "config/build_gpu.hh"
-
-#if BUILD_GPU
-
 #include <iostream>
 
 #include "mem/ruby/common/Address.hh"
@@ -96,5 +92,4 @@ class VIPERCoalescer : public GPUCoalescer
 } // namespace ruby
 } // namespace gem5
 
-#endif // BUILD_GPU
 #endif //__MEM_RUBY_SYSTEM_VIPERCOALESCER_HH__