TL: removing warning

Author: tlunet

pySDC/tests/test_benchmarks/test_collocation.py

@@ -3,8 +3,8 @@
 
 from pySDC.core.collocation import CollBase
 
-t_start = float(np.random.rand(1) * 0.2)
-t_end = float(0.8 + np.random.rand(1) * 0.2)
+t_start = float(np.random.rand(1)[0] * 0.2)
+t_end = float(0.8 + np.random.rand(1)[0] * 0.2)
 
 tolQuad = 1e-13