upgrade SunPy to 2.1.0, remove workaround which is now included in SunPy (sunpy/sunpy#4561)

Author: johan12345

gcs/gui.py

@@ -70,9 +70,7 @@ def load_image(spacecraft: str, detector: str, date: dt.datetime, runndiff: bool
 
 def download_helioviewer(date, observatory, instrument, detector):
     file = hv.download_jp2(date, observatory=observatory, instrument=instrument, detector=detector)
-    data, header = read_file(file)[0]
-    header['CROTA2'] = 0  # Helioviewer images are already rotated, so reset the CROTA2 header to 0
-    f = Map(data, header)
+    f = Map(file)
 
     if observatory == 'SOHO':
        # add observer location information:

requirements.txt

@@ -2,5 +2,5 @@ astroquery
 matplotlib
 numpy
 scipy>=1.2.0
-sunpy[net,jpeg2000]
+sunpy[net,jpeg2000]>=2.1.0
 PyQt5

setup.py

@@ -21,7 +21,7 @@
         ]
     },
     packages=['gcs', 'gcs.utils'],
-    install_requires=['astroquery', 'matplotlib', 'numpy', 'scipy>=1.2.0', 'sunpy[net,jpeg2000]', 'PyQt5'],
+    install_requires=['astroquery', 'matplotlib', 'numpy', 'scipy>=1.2.0', 'sunpy[net,jpeg2000]>=2.1.0', 'PyQt5'],
     classifiers=[
         "Programming Language :: Python :: 3",
         "License :: OSI Approved :: MIT License",