Remove unnecessary components

[jo-elimu]

Reduce code complexity by removing unnecessary components:

• #106
• #134
  • elimu-ai/webapp#1674
• elimu-ai/webapp#1651
• elimu-ai/webapp#1667
• elimu-ai/model#270
• elimu-ai/webapp#1733
• elimu-ai/analytics#156
• elimu-ai/content-provider#131
• elimu-ai/webapp#1755
• elimu-ai/webapp#1805
• elimu-ai/webapp#1807
• elimu-ai/webapp#1818
• elimu-ai/webapp#955
• elimu-ai/webapp#1802
• elimu-ai/webapp#1878
• elimu-ai/analytics#154
• elimu-ai/webapp#1898
• elimu-ai/webapp#1912