Remove rmgen sqrt proxy, refs #4933.

This was SVN commit r20793.

binaries/data/mods/public/maps/random/ardennes_forest.js

@@ -101,7 +101,7 @@ function distanceToPlayers(x, z)
 		var dz = z - playerZ[i];
 		r = Math.min(r, Math.square(dx) + Math.square(dz));
 	}
-	return sqrt(r);
+	return Math.sqrt(r);
 }
 
 function playerNearness(x, z)

binaries/data/mods/public/maps/random/canyon.js

@@ -210,7 +210,7 @@ for (let g = 0; g < scaleByMapSize(5, 30); ++g)
 		var p2 = 0;
 
 		for (let i = 0; i < numPlayers; ++i)
-			distances.push(sqrt((tx-mapSize*playerX[i])*(tx-mapSize*playerX[i])+(tz-mapSize*playerZ[i])*(tz-mapSize*playerZ[i])));
+			distances.push(Math.euclidDistance2D(tx, tz, fractionToTiles(playerX[i]), fractionToTiles(playerZ[i])));
 
 		for (let a = 0; a < numPlayers; ++a)
 		{

binaries/data/mods/public/maps/random/rmgen/library.js

@@ -72,11 +72,6 @@ function round(x)
 	return Math.round(x);
 }
 
-function sqrt(x)
-{
-	return Math.sqrt(x);
-}
-
 function floor(x)
 {
 	return Math.floor(x);

binaries/data/mods/public/maps/random/rmgen/placer_centered.js

@@ -36,7 +36,7 @@ ClumpPlacer.prototype.place = function(constraint)
 
 	var size = getMapSize();
 	var gotRet = new Array(size).fill(0).map(p => new Uint8Array(size)); // booleans
-	var radius = sqrt(this.size / PI);
+	var radius = Math.sqrt(this.size / Math.PI);
 	var perim = 4 * radius * 2 * PI;
 	var intPerim = Math.ceil(perim);