glsl-fs-discard-02: Remove unused variables.

Fixes these GCC warnings.
glsl-fs-discard-02.c: In function 'test':
glsl-fs-discard-02.c:81: warning: unused variable 'red'
glsl-fs-discard-02.c:80: warning: unused variable 'i'
glsl-fs-discard-02.c:78: warning: unused variable 'location'

1 files changed, 1 insertions, 3 deletions

diff --git a/tests/shaders/glsl-fs-discard-02.c b/tests/shaders/glsl-fs-discard-02.c
index d46593de3..f14b4cbab 100644
--- a/tests/shaders/glsl-fs-discard-02.c
+++ b/tests/shaders/glsl-fs-discard-02.c
@@ -75,10 +75,8 @@ static GLuint setup_shaders()
 
 static GLboolean test()
 {
-	GLint prog, location;
+	GLint prog;
 	GLboolean pass = GL_TRUE;
-	int i;
-	float red[4] =   {1, 0, 0, 0};
 	float green[4] = {0, 1, 0, 0};
 
 	prog = setup_shaders();