Remove unnecessary system.getEnvironmentVariable call

Author: AlexMarkUSDS

src/compiler/sys.ts

@@ -131,9 +131,6 @@ let pollingChunkSize = createPollingIntervalBasedLevels(defaultChunkLevels);
 export let unchangedPollThresholds = createPollingIntervalBasedLevels(defaultChunkLevels);
 
 function setCustomPollingValues(system: System) {
-    if (system.getEnvironmentVariable === undefined) {
-        return;
-    }
     const pollingIntervalChanged = setCustomLevels("TSC_WATCH_POLLINGINTERVAL", PollingInterval);
     pollingChunkSize = getCustomPollingBasedLevels("TSC_WATCH_POLLINGCHUNKSIZE", defaultChunkLevels) || pollingChunkSize;
     unchangedPollThresholds = getCustomPollingBasedLevels("TSC_WATCH_UNCHANGEDPOLLTHRESHOLDS", defaultChunkLevels) || unchangedPollThresholds;