Remove unnecessary sentence

doc/source/user_guide/rotations.rst

@@ -6,9 +6,7 @@ The group of all rotations in the 3D Cartesian space is called :math:`SO(3)`
 (SO: special orthogonal group). It is typically represented by 3D rotation
 matrices [7]_. The minimum number of components that are required to describe
 any rotation from :math:`SO(3)` is 3. However, there is no representation that
-is non-redundant, continuous, and free of singularities. We will now take a
-closer look at competing representations of rotations and the orientations they
-can describe.
+is non-redundant, continuous, and free of singularities.
 
 Here is an overview of the representations and the conversions between them
 that are available in pytransform3d.