refactor(settings): simplify VRAM usage mode to Conservative/Aggressive

The removed modes added complexity without significant benefit now that
the new VRAM management system (gc_aggressiveness, vram_limit_mb)
provides finer-grained control over memory pressure.

Signed-off-by: Zephyron <zephyron@citron-emu.org>

src/common/settings.h

@@ -499,7 +499,7 @@ struct Values {
     SwitchableSetting<VramUsageMode, true> vram_usage_mode{linkage,
                                                            VramUsageMode::Conservative,
                                                            VramUsageMode::Conservative,
-                                                           VramUsageMode::Insane,
+                                                           VramUsageMode::Aggressive,
                                                            "vram_usage_mode",
                                                            Category::RendererAdvanced};
 

src/common/settings_enums.h

@@ -406,8 +406,6 @@ inline u32 EnumMetadata<VSyncMode>::Index() {
 enum class VramUsageMode : u32 {
     Conservative = 0,
     Aggressive = 1,
-    HighEnd = 2,
-    Insane = 3,
 };
 
 template <>
@@ -416,8 +414,6 @@ EnumMetadata<VramUsageMode>::Canonicalizations() {
     return {
         {"Conservative", VramUsageMode::Conservative},
         {"Aggressive", VramUsageMode::Aggressive},
-        {"HighEnd", VramUsageMode::HighEnd},
-        {"Insane", VramUsageMode::Insane},
     };
 }