Change to default "skipTests" property instead of custom "skip.unit.tests" (#1249)

Co-authored-by: Brett Wooldridge <brett.wooldridge@gmail.com>

pom.xml

@@ -522,8 +522,6 @@
                <configuration>
                   <!-- Sets the VM argument line used when unit tests are run. -->
                   <argLine>${surefireArgLine} ${sureFireOptions11}</argLine>
-                  <!-- Skips unit tests if the value of skip.unit.tests property is true -->
-                  <skipTests>${skip.unit.tests}</skipTests>
                   <reuseForks>${sureFireForks11}</reuseForks>
                </configuration>
             </plugin>