Fix tests for variable redeclaration

Author: ubaidsk

integration_tests/array_expr_02.py

@@ -1,7 +1,6 @@
 from lpython import i32, f32, TypeVar
 from numpy import empty, sqrt, float32
 
-n: i32
 n = TypeVar("n")
 
 def modify(array_a: f32[:], n: i32) -> f32[n]:

integration_tests/generics_array_02.py

@@ -1,7 +1,6 @@
 from lpython import TypeVar, restriction, i32, f32
 from numpy import empty
 
-n: i32
 n = TypeVar("n")
 T = TypeVar('T')
 

integration_tests/generics_array_03.py

@@ -1,9 +1,7 @@
 from lpython import TypeVar, restriction, i32, f32
 from numpy import empty
 
-n: i32
 n = TypeVar("n")
-m: i32
 m = TypeVar("m")
 T = TypeVar('T')
 

integration_tests/test_numpy_02.py

@@ -12,7 +12,6 @@
 eps: f64
 eps = 1e-12
 
-n: i32
 n = TypeVar("n")
 
 def zeros(n: i32) -> f64[n]:
@@ -126,7 +125,6 @@ def fabs(f: f64) -> f64:
 def fabs(b: bool) -> f64:
     return sqrt(b)
 
-num: i32
 num = TypeVar("num")
 def linspace(start: f64, stop: f64, num: i32) -> f64[num]:
     A: f64[num]