Delete C++ implementation and dead code

src/compiler.bbb

@@ -18368,7 +18368,6 @@ compile_file = fn (arena: &Arena, compile_options: CompileFile, envp: &&u8) []u8
 
     >file_content = file_read(arena, relative_file_path);
     >file_path = path_absolute(arena, relative_file_path.pointer);
-    >c_abi_object_path = ""; // TODO
 
     >definitions: []Definition = zero;
     >cmake_prefix_path_definition: Definition = {
@@ -18386,8 +18385,8 @@ compile_file = fn (arena: &Arena, compile_options: CompileFile, envp: &&u8) []u8
         }
     }
 
-    >objects = [ output_object_path ][..];
-    >c_abi_library = "build/libc_abi.a";
+    >object_array = [ output_object_path, "self-hosted-bb-cache/c_abi.o" ];
+    >objects = object_array[..1];
 
     >library_buffer: [256][]u8 = undefined;
     >library_directory: []u8 = zero;
@@ -18524,7 +18523,7 @@ compile_file = fn (arena: &Arena, compile_options: CompileFile, envp: &&u8) []u8
     }
     else if (string_equal(base_name, "tests"))
     {
-        library_paths = { .pointer = &c_abi_library, .length = 1 };
+        objects = object_array[..];
     }
 
     >options: CompileOptions = {