Remove unnecessary components

[jo-elimu]

Reduce code complexity by removing unnecessary components:

• [x] https://github.com/elimu-ai/wiki/issues/106
• [x] https://github.com/elimu-ai/wiki/issues/134
  • [x] https://github.com/elimu-ai/webapp/issues/1674
• [x] https://github.com/elimu-ai/webapp/issues/1651
• [x] https://github.com/elimu-ai/webapp/issues/1667
• [x] https://github.com/elimu-ai/model/issues/270
• [x] https://github.com/elimu-ai/webapp/issues/1733
• [x] https://github.com/elimu-ai/analytics/issues/156
• [ ] https://github.com/elimu-ai/content-provider/issues/131
• [x] https://github.com/elimu-ai/webapp/pull/1755
• [x] https://github.com/elimu-ai/webapp/issues/1805
• [x] https://github.com/elimu-ai/webapp/issues/1807
• [x] https://github.com/elimu-ai/webapp/issues/1818
• [ ] https://github.com/elimu-ai/webapp/issues/955
• [x] https://github.com/elimu-ai/webapp/issues/1802
• [x] https://github.com/elimu-ai/webapp/issues/1878
• [x] https://github.com/elimu-ai/analytics/issues/154
• [x] https://github.com/elimu-ai/webapp/issues/1898
• [x] https://github.com/elimu-ai/webapp/issues/1912