read_excel return empty dataframe when using usecols

```python
In [3]: data = pd.read_excel("A.xlsx")

In [4]: data
Out[4]:
   A  B
0  1  2
1  3  4

In [5]: data1 = pd.read_excel("A.xlsx",usecols=['B'])

In [6]: data1
Out[6]:
Empty DataFrame
Columns: []
Index: []

In [7]: pd.__version__
Out[7]: '0.21.0'

```
#### Problem description
Having a excel file name A.xlsx(or A.xls) with column A,B
read_excel return empty dataframe if usecols used 