Remove old classes

[EthanTheGoondu]

No description provided.

[codecov-io]

Codecov Report

Merging #178 into master will decrease coverage by 4.95%.
The diff coverage is 84.61%.

@@             Coverage Diff              @@
##             master     #178      +/-   ##
============================================
- Coverage     43.14%   38.18%   -4.96%     
+ Complexity      540      444      -96     
============================================
  Files           146      136      -10     
  Lines          2777     2496     -281     
  Branches        329      279      -50     
============================================
- Hits           1198      953     -245     
+ Misses         1500     1476      -24     
+ Partials         79       67      -12     

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/seedu/address/MainApp.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...main/java/seedu/address/commons/core/Messages.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...u/address/logic/commands/AddAttendanceCommand.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...eedu/address/logic/commands/AddStudentCommand.java	85.71% <ø> (ø)	8.00 <0.00> (ø)
...address/logic/commands/AttendanceBelowCommand.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...ddress/logic/commands/DeleteAttendanceCommand.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...u/address/logic/commands/DeleteStudentCommand.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...dress/logic/commands/EditParticipationCommand.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...edu/address/logic/commands/EditStudentCommand.java	11.59% <ø> (ø)	0.00 <0.00> (ø)
...dress/logic/commands/EditTutorialGroupCommand.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
... and 42 more

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[fanminj]

LGTM!