Minor fix in setup.py

Signed-off-by: Grzegorz Latosinski <glatosinski@antmicro.com>

setup.py

diff --git a/setup.py b/setup.py
index ed15f65..9337d25 100644
--- a/setup.py
+++ b/setup.py
@@ -17,8 +17,7 @@
     install_requires=[
         'lxml',
         'pyjson',
-        'vtr_xml_utils @ \
-         git+https://github.com/Symbiflow/vtr-xml-utils',
+        'vtr_xml_utils @ git+https://github.com/Symbiflow/vtr-xml-utils',
     ],
     setup_requires=["pytest-runner"],
     tests_require=[