refactor: remove campaign summary queries

[lumtis]

• Remove CampaignSummary and CampaignSummaries queries
• Remove Reward dependency for campaign
• Remove Count methods for request and genesis validator in launch

[codecov]

Codecov Report

Merging #905 (b7a22b0) into develop (1858505) will increase coverage by 0.13%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop     #905      +/-   ##
===========================================
+ Coverage    10.42%   10.56%   +0.13%     
===========================================
  Files          330      327       -3     
  Lines        76837    75095    -1742     
===========================================
- Hits          8013     7932      -81     
+ Misses       68634    66977    -1657     
+ Partials       190      186       -4     

Impacted Files	Coverage Δ
x/campaign/types/query.pb.go	0.66% <0.00%> (+<0.01%)	⬆️
x/campaign/types/query.pb.gw.go	0.00% <ø> (ø)
x/launch/keeper/genesis_validator.go	100.00% <ø> (+16.07%)	⬆️
x/launch/keeper/request.go	100.00% <ø> (+4.92%)	⬆️
x/campaign/simulation/store.go	84.45% <0.00%> (+2.02%)	⬆️