pstats: Disable "App:Show code:General" collector for now

It is generating negative values, needs further investigation - maybe we need to restructure the whole hierarchy

panda/src/pstatclient/pStatProperties.cxx

@@ -109,6 +109,7 @@ static TimeCollectorProperties time_properties[] = {
   { 1, "App:Collisions:Reset",             { 0.0, 0.0, 0.5 } },
   { 0, "App:Data graph",                   { 0.5, 0.8, 0.4 } },
   { 1, "App:Show code",                    { 0.8, 0.2, 1.0 } },
+  { 0, "App:Show code:General",            { 0.4, 0.3, 0.9 } },
   { 0, "App:Show code:Nametags",           { 0.8, 0.8, 1.0 } },
   { 0, "App:Show code:Nametags:2d",        { 0.0, 0.0, 0.5 } },
   { 0, "App:Show code:Nametags:2d:Contents", { 0.0, 0.5, 0.0 } },