Sandbox opengl genrules

These work fine with sandboxing, I'm not sure why they were added
to the list.

Bug: 307824623
Test: ./build/soong/tests/genrule_sandbox_test.py egl_extensions_functions_hdr egl_functions_hdr gles1_core_functions_hdr gles1_extensions_functions_hdr gles2_core_functions_hdr gles2_extensions_functions_hdr gles31_only_functions_hdr gles3_only_functions_hdr
Change-Id: Ib179322f5b828dc85fccf9c0d1bacaad3fd359bf