remove title from tooltip'd element
remove title from tooltip'd element

closes: CNVS-35375

Test Plan:
 - have an assignment with a rubric graded via the rubric assessments
 - on grade summary page for a student
 - hover over check mark on right side
 - ensure only "See scoring details" custom tooltip is present
   and "View scoring details" is not present
 - hover over the rubric icon on the right side
 - ensure only "See rubric results" custom tooltip is present
   and "View Rubric Evaluation" is not present

Change-Id: I2b94a18ace8ff228ae46b804edbb4e95eb19d297
Reviewed-on: https://gerrit.instructure.com/105173
Reviewed-by: Neil Gupta <cc4fec8a34766005dd45d48be045c08d736c11ed@instructure.com>
Tested-by: Jenkins
QA-Review: Jeremy Neander <20252aad5efdc666f083d82ab63ed0f9f72a043e@instructure.com>
Product-Review: Keith T. Garner <a1a80143a840c140f31c3495ebbd9ec906e09fed@instructure.com>

venturehive/canvas-lms,venturehive/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,venturehive/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,venturehive/canvas-lms,djbender/canvas-lms