Boolean checks should not be inverted

SonarQube:

It is needlessly complex to invert the result of a boolean comparison. The opposite comparison should be made instead.

Problem:
Inverted comparison.

Solution:
Correcting it.

Where the problem occurs:

• https://github.com/openmrs/openmrs-module-coreapps/blob/1.29.0/api/src/main/java/org/openmrs/module/coreapps/utils/VisitTypeHelper.java#L109

Support materials:

• explanation of the problem by SonarQube: https://sonar.openmrs.org/coding_rules#rule_key=squid%3AS1940