Remove wrong description from Update Variable Resource

Fixes #4089

Author: filiphr

modules/flowable-cmmn-rest/src/main/java/org/flowable/cmmn/rest/service/api/runtime/caze/CaseInstanceVariableResource.java

@@ -69,7 +69,6 @@ public RestVariable getVariable(@ApiParam(name = "caseInstanceId") @PathVariable
 
     @ApiOperation(value = "Update a single variable on a case instance", tags = { "Case Instance Variables" }, nickname = "updateCaseInstanceVariable",
             notes = "This endpoint can be used in 2 ways: By passing a JSON Body (RestVariable) or by passing a multipart/form-data Object.\n"
-                    + "Nonexistent variables are created on the case instance and existing ones are overridden without any error.\n"
                     + "Note that scope is ignored, only global variables can be set in a case instance.\n"
                     + "NB: Swagger V2 specification doesn't support this use case that is why this endpoint might be buggy/incomplete if used with other tools.")
     @ApiImplicitParams({
@@ -123,7 +122,6 @@ public RestVariable updateVariable(@ApiParam(name = "caseInstanceId") @PathVaria
 
     @ApiOperation(value = "Update a single variable on a case instance asynchronously", tags = { "Case Instance Variables" }, nickname = "updateCaseInstanceVariableAsync",
             notes = "This endpoint can be used in 2 ways: By passing a JSON Body (RestVariable) or by passing a multipart/form-data Object.\n"
-                    + "Nonexistent variables are created on the case instance and existing ones are overridden without any error.\n"
                     + "Note that scope is ignored, only global variables can be set in a case instance.\n"
                     + "NB: Swagger V2 specification doesn't support this use case that is why this endpoint might be buggy/incomplete if used with other tools.")
     @ApiImplicitParams({

modules/flowable-rest/src/main/java/org/flowable/rest/service/api/runtime/process/ProcessInstanceVariableResource.java

@@ -75,7 +75,6 @@ public RestVariable getVariable(@ApiParam(name = "processInstanceId") @PathVaria
 
     @ApiOperation(value = "Update a single variable on a process instance", tags = { "Process Instance Variables" }, nickname = "updateProcessInstanceVariable",
             notes = "This endpoint can be used in 2 ways: By passing a JSON Body (RestVariable) or by passing a multipart/form-data Object.\n"
-                    + "Nonexistent variables are created on the process-instance and existing ones are overridden without any error.\n"
                     + "Note that scope is ignored, only local variables can be set in a process instance.\n"
                     + "NB: Swagger V2 specification does not support this use case that is why this endpoint might be buggy/incomplete if used with other tools.")
     @ApiImplicitParams({
@@ -128,7 +127,6 @@ public RestVariable updateVariable(@ApiParam(name = "processInstanceId") @PathVa
 
     @ApiOperation(value = "Update a single variable on a process instance asynchronously", tags = { "Process Instance Variables" }, nickname = "updateProcessInstanceVariableAsync",
             notes = "This endpoint can be used in 2 ways: By passing a JSON Body (RestVariable) or by passing a multipart/form-data Object.\n"
-                    + "Nonexistent variables are created on the process-instance and existing ones are overridden without any error.\n"
                     + "Note that scope is ignored, only local variables can be set in a process instance.\n"
                     + "NB: Swagger V2 specification does not support this use case that is why this endpoint might be buggy/incomplete if used with other tools.")
     @ApiImplicitParams({