changed wording as requested

Removed unused message

Author: ccreutzi

+llms/+utils/errorMessageCatalog.m

@@ -43,7 +43,7 @@
 catalog("llms:assistantMustHaveTextNameAndArguments") = "Fields 'name' and 'arguments' must be text with one or more characters.";
 catalog("llms:mustBeValidIndex") = "Value is larger than the number of elements in Messages ({1}).";
 catalog("llms:stopSequencesMustHaveMax4Elements") = "Number of elements must not be larger than 4.";
-catalog("llms:keyMustBeSpecified") = "API key not found as environment variable {1} and not specified via ApiKey parameter.";
+catalog("llms:keyMustBeSpecified") = "Unable to find API key. Either set environment variable {1} or specify name-value argument ""ApiKey"".";
 catalog("llms:mustHaveMessages") = "Value must contain at least one message in Messages.";
 catalog("llms:mustSetFunctionsForCall") = "When no functions are defined, ToolChoice must not be specified.";
 catalog("llms:mustBeMessagesOrTxt") = "Messages must be text with one or more characters or an openAIMessages objects.";
@@ -54,7 +54,6 @@
 catalog("llms:promptLimitCharacter") = "Prompt must have a maximum length of {1} characters for ModelName '{2}'";
 catalog("llms:pngExpected") = "Argument must be a PNG image.";
 catalog("llms:warningJsonInstruction") = "When using JSON mode, you must also prompt the model to produce JSON yourself via a system or user message.";
-catalog("llms:invalidOptionsForOpenAIBackEnd") = "The parameters Resource Name, Deployment ID and API Version are not compatible with OpenAI.";
 catalog("llms:invalidOptionsForAzureBackEnd") = "The parameter Model Name is not compatible with Azure.";
 catalog("llms:apiReturnedError") = "OpenAI API Error: {1}";
 catalog("llms:dimensionsMustBeSmallerThan") = "Dimensions must be less than or equal to {1}.";