remove (sp) from the examples

Author: perazz

example/linalg/example_eig.f90

@@ -1,12 +1,11 @@
 ! Eigendecomposition of a real square matrix 
 program example_eig
-  use stdlib_linalg_constants, only: sp
   use stdlib_linalg, only: eig
   implicit none
 
   integer :: i
-  real(sp), allocatable :: A(:,:)
-  complex(sp), allocatable :: lambda(:),vectors(:,:)
+  real, allocatable :: A(:,:)
+  complex, allocatable :: lambda(:),vectors(:,:)
 
   ! Decomposition of this square matrix
   ! NB Fortran is column-major -> transpose input

example/linalg/example_eigh.f90

@@ -1,12 +1,11 @@
 ! Eigendecomposition of a real symmetric matrix 
 program example_eigh
-  use stdlib_linalg_constants, only: sp
   use stdlib_linalg, only: eigh
   implicit none
 
   integer :: i
-  real(sp), allocatable :: A(:,:),lambda(:),v(:,:)
-  complex(sp), allocatable :: cA(:,:),cv(:,:)
+  real, allocatable :: A(:,:),lambda(:),v(:,:)
+  complex, allocatable :: cA(:,:),cv(:,:)
 
   ! Decomposition of this symmetric matrix
   ! NB Fortran is column-major -> transpose input

example/linalg/example_eigvals.f90

@@ -1,12 +1,11 @@
 ! Eigenvalues of a general real / complex matrix 
 program example_eigvals
-  use stdlib_linalg_constants, only: sp
   use stdlib_linalg, only: eigvals
   implicit none
 
   integer :: i
-  real(sp), allocatable :: A(:,:),lambda(:)
-  complex(sp), allocatable :: cA(:,:),clambda(:)
+  real, allocatable :: A(:,:),lambda(:)
+  complex, allocatable :: cA(:,:),clambda(:)
 
   ! NB Fortran is column-major -> transpose input
   A = transpose(reshape( [ [2, 8, 4], &

example/linalg/example_eigvalsh.f90

@@ -1,12 +1,11 @@
 ! Eigenvalues of a real symmetric / complex hermitian matrix 
 program example_eigvalsh
-  use stdlib_linalg_constants, only: sp
   use stdlib_linalg, only: eigvalsh
   implicit none
 
   integer :: i
-  real(sp), allocatable :: A(:,:),lambda(:)
-  complex(sp), allocatable :: cA(:,:)
+  real, allocatable :: A(:,:),lambda(:)
+  complex, allocatable :: cA(:,:)
 
   ! Decomposition of this symmetric matrix
   ! NB Fortran is column-major -> transpose input