Partially fixed IntelliJ warnings (#361)

Partially addressing #361 and fixed more straight-forward IntelliJ warnings.

theodolite/src/main/kotlin/theodolite/execution/operator/TheodoliteOperator.kt

@@ -143,7 +143,7 @@ class TheodoliteOperator {
             ExecutionCRD,
             BenchmarkExecutionList,
             Resource<ExecutionCRD>> {
-        return client.customResources(
+        return client.resources(
             ExecutionCRD::class.java,
             BenchmarkExecutionList::class.java
         )
@@ -153,7 +153,7 @@ class TheodoliteOperator {
             BenchmarkCRD,
             KubernetesBenchmarkList,
             Resource<BenchmarkCRD>> {
-        return client.customResources(
+        return client.resources(
             BenchmarkCRD::class.java,
             KubernetesBenchmarkList::class.java
         )