Revert "Triton can be installed using pip"

Author: JonathanSalwan

README.md

@@ -91,15 +91,8 @@ from triton import *
 '0xdead'
 ```
 
-## Install using pip
 
-Triton can be installed using `pip`:
-
-```console
-pip install triton-library
-```
-
-## Install from source
+## Install
 
 Triton relies on the following dependencies:
 
@@ -112,6 +105,7 @@ Triton relies on the following dependencies:
 * llvm          (optional)   >= 12
 ```
 
+
 ### Linux and MacOS
 
 ```console