CHEAP_HYPOTENUSE() no longer makes the differences between the coordi…

…nates absolute. (tgstation#82468)

## About The Pull Request
CHEAP_HYPOTENUSE() no longer absolutes the differences between the
coordinates.
## Why It's Good For The Game
It gets squared so it doesn't need to be done.

code/__DEFINES/maths.dm

@@ -250,7 +250,7 @@
 
 //We used to use linear regression to approximate the answer, but Mloc realized this was actually faster.
 //And lo and behold, it is, and it's more accurate to boot.
-#define CHEAP_HYPOTENUSE(Ax, Ay, Bx, By) (sqrt(abs(Ax - Bx) ** 2 + abs(Ay - By) ** 2)) //A squared + B squared = C squared
+#define CHEAP_HYPOTENUSE(Ax, Ay, Bx, By) (sqrt((Ax - Bx) ** 2 + (Ay - By) ** 2)) //A squared + B squared = C squared
 
 /// The number of cells in a taxicab circle (rasterized diamond) of radius X.
 #define DIAMOND_AREA(X) (1 + 2*(X)*((X)+1))