IVGCVSW-4485 Remove Boost assert

 * Change boost assert to armnn assert
 * Change include file to armnn assert
 * Fix ARMNN_ASSERT_MSG issue with multiple conditions
 * Change BOOST_ASSERT to BOOST_TEST where appropriate
 * Remove unused include statements

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I5d0fa3a37b7c1c921216de68f0073aa34702c9ff
diff --git a/src/armnn/Runtime.cpp b/src/armnn/Runtime.cpp
index dfcbf85..f44606c 100644
--- a/src/armnn/Runtime.cpp
+++ b/src/armnn/Runtime.cpp
@@ -192,7 +192,7 @@
         try {
             auto factoryFun = BackendRegistryInstance().GetFactory(id);
             auto backend = factoryFun();
-            BOOST_ASSERT(backend.get() != nullptr);
+            ARMNN_ASSERT(backend.get() != nullptr);
 
             auto context = backend->CreateBackendContext(options);