Remove precision-equivalency tests

Due to specs approximation values, some tests are invalid as the harness
helpers rely on another approximated values as Math.LN2.

harness/math_isequal.js

-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-var prec;
-function isEqual(num1, num2)
-{
-        if ((num1 === Infinity)&&(num2 === Infinity))
-        {
-                return(true);
-        }
-        if ((num1 === -Infinity)&&(num2 === -Infinity))
-        {
-                return(true);
-        }
-        prec = getPrecision(Math.min(Math.abs(num1), Math.abs(num2)));  
-        return(Math.abs(num1 - num2) <= prec);
-        //return(num1 === num2);
-}
-

harness/math_precision.js

-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-function getPrecision(num) {
-	//TODO: Create a table of prec's,
-	//      because using Math for testing Math isn't that correct.
-
-	var log2num = Math.log(Math.abs(num)) / Math.LN2;
-	var pernum = Math.ceil(log2num);
-	return 2 * Math.pow(2, -52 + pernum);
-}

test/built-ins/Math/atan/S15.8.2.4_A4.js

-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-info: >
-    If x is +Infinity, Math.atan(x) is an implementation-dependent
-    approximation to +PI/2
-es5id: 15.8.2.4_A4
-description: Checking if Math.atan(+Infinity) is an approximation to +PI/2
-includes:
-    - math_precision.js
-    - math_isequal.js
----*/
-
-// CHECK#1
-
-var x = +Infinity;
-if (!isEqual(Math.atan(x),Math.PI/2))
-{
-	$ERROR("#1: '!isEqual(Math.atan(+Infinity), Math.PI/2)'");
-}

test/built-ins/Math/atan/S15.8.2.4_A5.js

-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-info: >
-    If x is -Infinity, Math.atan(x) is an implementation-dependent
-    approximation to -PI/2
-es5id: 15.8.2.4_A5
-description: Checking if Math.atan(-Infinity) is an approximation to -PI/2
-includes:
-    - math_precision.js
-    - math_isequal.js
----*/
-
-// CHECK#1
-
-var x = -Infinity;
-if (!isEqual(Math.atan(x), -Math.PI/2))
-{
-	$ERROR("#1: '!isEqual(Math.atan(-Infinity), -Math.PI/2)'");
-}

test/built-ins/Number/MIN_VALUE/S15.7.3.3_A1.js

-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-info: Number.MIN_VALUE is approximately 5e-324
-es5id: 15.7.3.3_A1
-description: Checking Number.MIN_VALUE value
-includes:
-    - math_precision.js
-    - math_isequal.js
----*/
-
-// CHECK#1
-if (!isEqual(Number.MIN_VALUE, 5e-324)) {
-  $ERROR('#1: Number.MIN_VALUE approximately equal to 5e-324');
-}