Remove obsolete RegNode

CMakeLists.txt

@@ -9,18 +9,20 @@ add_executable(lasm
         src/main.cpp
         src/lexer/Token.cpp
         src/lexer/Lexer.cpp
+        src/parser/Parser.cpp
+
         src/ast/Node.cpp
         src/ast/nodes/RootNode.cpp
         src/ast/nodes/ConstNode.cpp
-        src/ast/nodes/RegNode.cpp
         src/ast/nodes/MovNode.cpp
         src/ast/nodes/AluNode.cpp
         src/ast/nodes/JumpNode.cpp
+
         src/ast/Observer.cpp
         src/ast/PrefixObserver.cpp
         src/ast/PostfixObserver.cpp
         src/codegen/PrintObserver.cpp
         src/codegen/CodegenObserver.cpp
-        src/parser/Parser.cpp)
+        )
 
 target_link_libraries(lasm Boost::program_options)