rm qt icons file

so we don't need pyrcc5, which is not deterministic,
and so we don't need the submodule for the icons

based on electrumsv/electrumsv@bf8802c2ea

setup.py

@@ -58,23 +58,6 @@ extras_require = {
 extras_require['full'] = [pkg for sublist in list(extras_require.values()) for pkg in sublist]
 
 
-class CustomInstallCommand(install):
-    def run(self):
-        install.run(self)
-        # potentially build Qt icons file
-        try:
-            import PyQt5
-        except ImportError:
-            pass
-        else:
-            try:
-                path = os.path.join(self.install_lib, "electrum/gui/qt/icons_rc.py")
-                if not os.path.exists(path):
-                    subprocess.call(["pyrcc5", "icons.qrc", "-o", path])
-            except Exception as e:
-                print('Warning: building icons file failed with {}'.format(repr(e)))
-
-
 setup(
     name="Electrum",
     version=version.ELECTRUM_VERSION,
@@ -105,7 +88,4 @@ setup(
     license="MIT Licence",
     url="https://electrum.org",
     long_description="""Lightweight Bitcoin Wallet""",
-    cmdclass={
-        'install': CustomInstallCommand,
-    },
 )