Revert "Make requirement of o.e.swt for swt.win32.aarch64 temporarily

optional"

Now that an Equinox launcher is  available for Windows on ARM and the
win32.aarch64 environment is activated in the Eclipse Maven build, the
requirement don't need to be optional anymore.

This reverts commit 5a79f9f.

bundles/org.eclipse.swt/META-INF/p2.inf

@@ -37,6 +37,5 @@ requires.7.filter = (&(osgi.os=macosx)(osgi.ws=cocoa)(osgi.arch=aarch64)(!(org.e
 
 requires.8.namespace = org.eclipse.equinox.p2.iu
 requires.8.name = org.eclipse.swt.win32.win32.aarch64
-requires.8.optional = true
 requires.8.range = [$version$,$version$]
 requires.8.filter = (&(osgi.os=win32)(osgi.ws=win32)(osgi.arch=aarch64)(!(org.eclipse.swt.buildtime=true)))

examples/org.eclipse.swt.examples.ole.win32/META-INF/p2.inf

@@ -6,6 +6,5 @@ requires.0.filter = (&(osgi.os=win32)(osgi.ws=win32)(osgi.arch=x86_64))
 
 requires.1.namespace = org.eclipse.equinox.p2.iu
 requires.1.name = org.eclipse.swt.win32.win32.aarch64
-requires.1.optional = true
 #requires.1.range = [$version$,$version$]
 requires.1.filter = (&(osgi.os=win32)(osgi.ws=win32)(osgi.arch=aarch64))