Edit function: callback function that draws chart

Remove the logic that throws an error if there is a problem fetching
metadata and observations. It is currently not working as expected

public/js/appChart.js

@@ -231,23 +231,6 @@ const drawChartUsingSelectedOptions = async function () {
             )
           );
 
-    // If there is an error in fetching metadata + observations (Case 1: raw observations)
-    // the returned array will have this structure: [[undefined, undefined], undefined]
-    // Note that the second element is not an array as we would expect but is a
-    // a single `undefined` value
-    if (typeof observationsRawPlusMetadataArr[0][0] === "undefined") {
-      throw new Error(
-        `There was a problem in fetching metadata and observations`
-      );
-    }
-
-    // If there is an error in fetching metadata + observations (Case 2: temperature difference, dT)
-    // a single `undefined` value instead of an array (as we would expect) will be returned
-    if (typeof observationsTempDiffPlusMetadataArr === "undefined")
-      throw new Error(
-        `There was a problem in calculating the temperature difference (dT).\nThis is most likely due to a problem in fetching metadata and observations`
-      );
-
     // Extract the combined arrays for observations and metadata / raw observations
     const [observationsRawNestedArr, metadataRawNestedArr] =
       observationsRawPlusMetadataArr;