reverted to reporting all imts per gmm

src/main/java/gov/usgs/earthquake/nshmp/www/gmm/GmmCalc.java

@@ -30,7 +30,6 @@ import gov.usgs.earthquake.nshmp.www.gmm.GmmService.Distance;
 import gov.usgs.earthquake.nshmp.www.gmm.GmmService.Magnitude;
 import gov.usgs.earthquake.nshmp.www.gmm.GmmService.Request;
 import gov.usgs.earthquake.nshmp.www.gmm.XyDataGroup.EpiSeries;
-
 import jakarta.inject.Singleton;
 
 /*
@@ -43,11 +42,12 @@ class GmmCalc {
 
   /* Compute ground motion response spectra. */
   static Map<Gmm, GmmSpectraData> spectra(Request request) {
-    Set<Imt> saImts = Gmm.responseSpectrumImts(request.gmms);
 
     Map<Gmm, GmmSpectraData> gmmSpectra = new EnumMap<>(Gmm.class);
 
     for (Gmm gmm : request.gmms) {
+      Set<Imt> saImts = gmm.responseSpectrumImts();
+
       List<LogicTree<GroundMotion>> saImtTrees = saImts.stream()
           .map(imt -> gmm.instance(imt).calc(request.input))
           .collect(Collectors.toList());