fix: remove usage of probability field (#5877)

- fixes #5735

---------

Co-authored-by: Marie Stoppa <marie.stoppa@essec.edu>

packages/twenty-server/src/engine/api/__mocks__/object-metadata-item.mock.ts

@@ -145,13 +145,6 @@ const fieldNumericMock = {
   defaultValue: null,
 };
 
-const fieldProbabilityMock = {
-  name: 'fieldProbability',
-  type: FieldMetadataType.PROBABILITY,
-  isNullable: true,
-  defaultValue: null,
-};
-
 const fieldFullNameMock = {
   name: 'fieldFullName',
   type: FieldMetadataType.FULL_NAME,
@@ -206,7 +199,6 @@ export const fields = [
   fieldBooleanMock,
   fieldNumberMock,
   fieldNumericMock,
-  fieldProbabilityMock,
   fieldLinkMock,
   fieldLinksMock,
   fieldCurrencyMock,