Removed unused variables.

src/renderers/WebGLRenderer.js

@@ -3301,8 +3301,6 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		var isCube = ( renderTarget instanceof THREE.WebGLRenderTargetCube );
 		var isTargetPowerOfTwo = THREE.Math.isPowerOfTwo( renderTarget.width ) && THREE.Math.isPowerOfTwo( renderTarget.height );
-		var glFormat = paramThreeToGL( renderTarget.texture.format );
-		var glType = paramThreeToGL( renderTarget.texture.type );
 
 		// Setup framebuffer
 

src/renderers/webgl/WebGLIndexedBufferRenderer.js

@@ -51,8 +51,6 @@ THREE.WebGLIndexedBufferRenderer = function ( _gl, extensions, _infoRender ) {
 
 		}
 
-		var index = geometry.index;
-
 		extension.drawElementsInstancedANGLE( mode, count, type, start * size, geometry.maxInstancedCount );
 
 	}

src/renderers/webgl/WebGLShadowMap.js

@@ -10,9 +10,6 @@ THREE.WebGLShadowMap = function ( _renderer, _lights, _objects ) {
 	_frustum = new THREE.Frustum(),
 	_projScreenMatrix = new THREE.Matrix4(),
 
-	_min = new THREE.Vector3(),
-	_max = new THREE.Vector3(),
-
 	_lookTarget = new THREE.Vector3(),
 	_lightPositionWorld = new THREE.Vector3(),