remove duplicate code that deletes shaders after loading

src/shader.cpp

@@ -469,13 +469,6 @@ compileAndLinkShader(ShaderProgram* shader,
 			glDeleteProgram(shader->prog_id);
 		}
 
-		// FIXME: this works in libTangerine cleanUpShader(),  but errors here?
-#if 0
-		glDetachShader(shader->prog_id, vs_id);
-		glDetachShader(shader->prog_id, fs_id);
-		glDeleteShader(vs_id);
-		glDeleteShader(fs_id);
-#endif
 		return (is_linked == GL_TRUE);
 	}