Texture issue without gates

[dacmot]

#669 introduced a texture dependency on gates in delayer (0a4651c) by referencing jeija_gate_output_off.png and jeija_gate_output_on.png

As gates depends on delayer but not the other way, it's possible to remove mesecons_gates, and get this error:

2024-07-08 21:12:22: INFO[Main]: SourceImageCache::getOrLoad(): No path found for "jeija_gate_output_off.png"
2024-07-08 21:12:22: ERROR[Main]: generateImage(): Could not load image "jeija_gate_output_off.png" while building texture; Creating a dummy image
2024-07-08 21:12:22: INFO[Main]: SourceImageCache::getOrLoad(): No path found for "jeija_gate_output_on.png"
2024-07-08 21:12:22: ERROR[Main]: generateImage(): Could not load image "jeija_gate_output_on.png" while building texture; Creating a dummy image

#669 had moved jeija_gate_on/off.png from gates to delayer... maybe the ones with "output" in the name should be moved as well.