EGL: Remove protected content test case Remove Protected content test: Protected context with unprotected texture since it is a spec violation to render to an unprotected texture from a protected context Bug: angleproject:7967 Change-Id: I40ce205a962614fe726417b0ed921b3a5133c079 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4182560 Commit-Queue: mohan maiya <m.maiya@samsung.com> Reviewed-by: Jeff Vigil <j.vigil@samsung.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>