C80 remove next week prev week btns on student graph

[JordanHartley]

Change Summary

Removes Next and Previous Week buttons on student bar graph

Change Form

Not enough time

• [X] The pull request title has an issue number
• [X] The code works by "Smoke testing" (in other words, you have tested it your own and it works)
• [ ] The code has documentation (either comments or in main documentation platform)