Remove "self-healing" when service state inconsistent

[JohnStarich]

In the early days of IBM Cloud Operator, self-healing was added with the intent to reconcile a Service in an inconsistent state by recreating the service instance.

This can be very destructive for critical services like databases, so this PR removes the service deletion.

[codecov]

Codecov Report

Merging #262 (892d009) into master (8c24507) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #262      +/-   ##
==========================================
- Coverage   92.82%   92.80%   -0.03%     
==========================================
  Files           9        9              
  Lines        1171     1167       -4     
==========================================
- Hits         1087     1083       -4     
  Misses         56       56              
  Partials       28       28              

Impacted Files	Coverage Δ
controllers/service_controller.go	97.88% <ø> (-0.03%)	⬇️

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