Remove unused return value.

Bug b/17893069

Change-Id: I78d582455192456625523d7bf2bdc5d16c88d68e
Reviewed-on: https://swiftshader-review.googlesource.com/9814
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>

src/Reactor/LLVMReactor.cpp

diff --git a/src/Reactor/LLVMReactor.cpp b/src/Reactor/LLVMReactor.cpp
index bfcf2ff..dda5c04 100644
--- a/src/Reactor/LLVMReactor.cpp
+++ b/src/Reactor/LLVMReactor.cpp
@@ -6370,12 +6370,10 @@
 		Nucleus::createUnreachable();
 	}
 
-	bool branch(RValue<Bool> cmp, BasicBlock *bodyBB, BasicBlock *endBB)
+	void branch(RValue<Bool> cmp, BasicBlock *bodyBB, BasicBlock *endBB)
 	{
 		Nucleus::createCondBr(cmp.value, bodyBB, endBB);
 		Nucleus::setInsertBlock(bodyBB);
-
-		return true;
 	}
 
 	RValue<Long> Ticks()

src/Reactor/Reactor.hpp

diff --git a/src/Reactor/Reactor.hpp b/src/Reactor/Reactor.hpp
index cfb005c..b02c6be 100644
--- a/src/Reactor/Reactor.hpp
+++ b/src/Reactor/Reactor.hpp
@@ -2162,7 +2162,7 @@
 //	RValue<Array<T>> operator--(Array<T> &val, int);   // Post-decrement
 //	const Array<T> &operator--(Array<T> &val);   // Pre-decrement
 
-	bool branch(RValue<Bool> cmp, BasicBlock *bodyBB, BasicBlock *endBB);
+	void branch(RValue<Bool> cmp, BasicBlock *bodyBB, BasicBlock *endBB);
 
 	void Return();
 	void Return(RValue<Int> ret);

src/Reactor/SubzeroReactor.cpp

diff --git a/src/Reactor/SubzeroReactor.cpp b/src/Reactor/SubzeroReactor.cpp
index c0ebb81..020f82b 100644
--- a/src/Reactor/SubzeroReactor.cpp
+++ b/src/Reactor/SubzeroReactor.cpp
@@ -6455,12 +6455,10 @@
 		Nucleus::createUnreachable();
 	}
 
-	bool branch(RValue<Bool> cmp, BasicBlock *bodyBB, BasicBlock *endBB)
+	void branch(RValue<Bool> cmp, BasicBlock *bodyBB, BasicBlock *endBB)
 	{
 		Nucleus::createCondBr(cmp.value, bodyBB, endBB);
 		Nucleus::setInsertBlock(bodyBB);
-
-		return true;
 	}
 
 	RValue<Long> Ticks()